diff --git a/.changeset/resize-max-size-and-header-ellipsis.md b/.changeset/resize-max-size-and-header-ellipsis.md
new file mode 100644
index 0000000..6a74f0d
--- /dev/null
+++ b/.changeset/resize-max-size-and-header-ellipsis.md
@@ -0,0 +1,15 @@
+---
+'@zvndev/yable-core': minor
+'@zvndev/yable-react': patch
+'@zvndev/yable-themes': patch
+---
+
+Add `resizeMaxSize` and stop the header ellipsis from clipping label-less headers
+
+- **core:** New per-column `resizeMaxSize` caps USER drag-resize independently of
+  `maxSize` (defaults to `maxSize`, fully back-compatible). `maxSize` still caps
+  auto-sizing/stretch; set `resizeMaxSize` (e.g. `Infinity`, or app-wide via
+  `defaultColumnDef`) to let a human drag a column past its auto-size cap.
+- **react/themes:** The header-label ellipsis now only applies to string headers
+  (marked `.yable-th-label`). Component/empty headers such as a selection-column
+  checkbox are no longer collapsed and cropped.
diff --git a/apps/docs/content/docs/features/column-resizing.mdx b/apps/docs/content/docs/features/column-resizing.mdx
index b37db72..6c99c94 100644
--- a/apps/docs/content/docs/features/column-resizing.mdx
+++ b/apps/docs/content/docs/features/column-resizing.mdx
@@ -24,13 +24,33 @@ columnHelper.accessor('name', {
   header: 'Name',
   size: 200, // Default width in px
   minSize: 100, // Minimum width
-  maxSize: 400, // Maximum width
+  maxSize: 400, // Maximum width (also caps auto-sizing/stretch)
+  resizeMaxSize: Infinity, // Upper bound for USER drag-resize (defaults to maxSize)
   enableResizing: true,
 })
 ```
 
+### Separating the resize cap from `maxSize`
+
+`maxSize` caps **both** auto-sizing/stretch **and** user drag-resize, so a column
+given a `maxSize` for auto-size discipline feels non-resizable past that width.
+Use `resizeMaxSize` to raise the ceiling for user drags only — `maxSize` keeps
+capping auto-sizing/stretch, while a human can drag the column up to
+`resizeMaxSize`. It defaults to `maxSize` (fully back-compatible).
+
+```typescript
+// App-wide: let users drag any column past its auto-size cap.
+const table = useTable({
+  data,
+  columns,
+  enableColumnResizing: true,
+  defaultColumnDef: { resizeMaxSize: Infinity },
+})
+```
+
 ### Notes
 
 - `columnResizeMode: 'onChange'` updates widths as the user drags
 - `columnResizeMode: 'onEnd'` only updates when the user releases the mouse
 - The `table.getTotalSize()` method returns the total width of all visible columns
+- `resizeMaxSize` only affects user drag-resize; auto-sizing/stretch always honor `maxSize`
diff --git a/e2e/interactions.spec.ts b/e2e/interactions.spec.ts
index 6dc26ce..3762cd9 100644
--- a/e2e/interactions.spec.ts
+++ b/e2e/interactions.spec.ts
@@ -667,3 +667,57 @@ test.describe('resize handle alignment', () => {
     expect(handleBox.x + handleBox.width).toBeGreaterThan(boundary)
   })
 })
+
+// The header-label ellipsis clip (added in 0.6.1) must only apply to STRING
+// headers. A `selectColumn()` renders a checkbox `<label>` with no text; the
+// clip previously collapsed its content span and cropped the 16px checkbox to
+// 0px even at the column's natural width.
+test.describe('label-less header is not clipped by the label ellipsis', () => {
+  test('selection checkbox header stays fully visible at size 40', async ({ page }) => {
+    await page.goto('/e2e/column-sizing')
+    const root = grid(page, 'grid-select-header')
+    await expect(root.locator('thead th').first()).toBeVisible()
+
+    const hitbox = root.locator('thead .yable-checkbox-hitbox')
+    await expect(hitbox).toBeVisible()
+
+    // The hitbox (and the checkbox it wraps) must not be collapsed by ellipsis.
+    const hitboxBox = (await hitbox.boundingBox())!
+    expect(hitboxBox.width).toBeGreaterThanOrEqual(16)
+
+    const checkbox = root.locator('thead input[type="checkbox"]')
+    const checkboxBox = (await checkbox.boundingBox())!
+    expect(checkboxBox.width).toBeGreaterThanOrEqual(12)
+  })
+})
+
+// `resizeMaxSize` (defaults to `maxSize`) caps USER drag-resize independently of
+// `maxSize`. With `resizeMaxSize: Infinity` set app-wide via `defaultColumnDef`,
+// a human can drag a `maxSize`-capped column wider than its cap.
+test.describe('resizeMaxSize lets user drag past maxSize', () => {
+  test('dragging a maxSize-capped column grows it past maxSize', async ({ page }) => {
+    await page.goto('/e2e/column-sizing')
+    const root = grid(page, 'grid-resize-max')
+    const nameTh = root.locator('thead th[data-column-id="name"]')
+    await expect(nameTh).toBeVisible()
+
+    const handle = nameTh.locator('.yable-resize-handle')
+    const hb = (await handle.boundingBox())!
+    const before = (await nameTh.boundingBox())!.width
+
+    // Grab just inside the divider and drag well past maxSize (180).
+    const thb = (await nameTh.boundingBox())!
+    const boundary = thb.x + thb.width
+    const grabX = boundary - 4
+    const grabY = hb.y + hb.height / 2
+    await page.mouse.move(grabX, grabY)
+    await page.mouse.down()
+    await page.mouse.move(grabX + 200, grabY, { steps: 8 })
+    await page.mouse.up()
+
+    const after = (await nameTh.boundingBox())!.width
+    expect(after).toBeGreaterThan(before)
+    // maxSize is 180; without resizeMaxSize the width would clamp there.
+    expect(after).toBeGreaterThan(200)
+  })
+})
diff --git a/examples/react-demo/src/app/e2e/column-sizing/page.tsx b/examples/react-demo/src/app/e2e/column-sizing/page.tsx
new file mode 100644
index 0000000..461a6d6
--- /dev/null
+++ b/examples/react-demo/src/app/e2e/column-sizing/page.tsx
@@ -0,0 +1,79 @@
+'use client'
+
+// E2E fixture: column sizing edge cases.
+//
+// 1. Label-less (component) header must NOT be clipped by the header-label
+//    ellipsis. A `selectColumn()` renders a checkbox `<label>` with no text; the
+//    0.6.1 ellipsis clip cropped it to 0px. e2e/interactions.spec.ts asserts the
+//    header checkbox/hitbox stays fully visible (≥ ~16px) even at size 40.
+// 2. `resizeMaxSize` lets a user drag a `maxSize`-capped column past its cap.
+//    Set app-wide via `defaultColumnDef`. The spec drags the header wider than
+//    `maxSize` and asserts the rendered header width exceeds `maxSize`.
+
+import { useTable, Table, createColumnHelper, selectColumn } from '@zvndev/yable-react'
+
+interface Item {
+  id: number
+  name: string
+}
+
+const ROWS: Item[] = Array.from({ length: 8 }, (_, i) => ({
+  id: i + 1,
+  name: `Item ${i + 1}`,
+}))
+
+const col = createColumnHelper<Item>()
+
+// --- Label-less header (selection checkbox) --------------------------------
+
+function SelectHeaderGrid() {
+  const table = useTable<Item>({
+    data: ROWS,
+    columns: [
+      selectColumn<Item>({ size: 40 }),
+      col.accessor('name', { header: 'Name', size: 160 }),
+    ],
+    getRowId: (row) => String(row.id),
+    enableRowSelection: true,
+    initialState: { pagination: { pageIndex: 0, pageSize: 100 } },
+  })
+  return <Table table={table} bordered />
+}
+
+// --- resizeMaxSize: drag past maxSize --------------------------------------
+
+const RESIZE_MAX_SIZE = 180
+
+function ResizePastMaxGrid() {
+  const table = useTable<Item>({
+    data: ROWS,
+    columns: [
+      // maxSize caps auto-sizing, but resizeMaxSize (Infinity, app-wide) lets a
+      // human drag past it.
+      col.accessor('name', { header: 'Name', size: 120, minSize: 100, maxSize: RESIZE_MAX_SIZE }),
+      col.accessor('id', { header: 'ID', size: 120 }),
+    ],
+    getRowId: (row) => String(row.id),
+    defaultColumnDef: { resizeMaxSize: Number.POSITIVE_INFINITY },
+    enableColumnResizing: true,
+    columnResizeMode: 'onChange',
+    initialState: { pagination: { pageIndex: 0, pageSize: 100 } },
+  })
+  return <Table table={table} bordered />
+}
+
+export default function ColumnSizingFixturePage() {
+  return (
+    <main style={{ padding: 24 }}>
+      <h1>Column sizing fixture</h1>
+      <section data-testid="grid-select-header" style={{ width: 400, marginBottom: 48 }}>
+        <h2>Label-less header (selection checkbox)</h2>
+        <SelectHeaderGrid />
+      </section>
+      <section data-testid="grid-resize-max" style={{ width: 600 }}>
+        <h2>resizeMaxSize: drag past maxSize</h2>
+        <ResizePastMaxGrid />
+      </section>
+    </main>
+  )
+}
diff --git a/examples/react-demo/src/content/docs/features.md b/examples/react-demo/src/content/docs/features.md
index 8897ff1..44332fa 100644
--- a/examples/react-demo/src/content/docs/features.md
+++ b/examples/react-demo/src/content/docs/features.md
@@ -559,19 +559,40 @@ columnHelper.accessor('name', {
   header: 'Name',
   size: 200, // Default width in px
   minSize: 100, // Minimum width
-  maxSize: 400, // Maximum width
+  maxSize: 400, // Maximum width (also caps auto-sizing/stretch)
+  resizeMaxSize: Infinity, // Upper bound for USER drag-resize (defaults to maxSize)
   enableResizing: true,
 })
 ```
 
+### Separating the resize cap from `maxSize`
+
+`maxSize` caps **both** auto-sizing/stretch **and** user drag-resize. To let a
+human drag a column past its auto-size cap, set `resizeMaxSize` — it caps user
+drag-resize independently and defaults to `maxSize` (fully back-compatible).
+`maxSize` keeps capping auto-sizing/stretch. Set it app-wide via
+`defaultColumnDef`:
+
+```typescript
+const table = useTable({
+  data,
+  columns,
+  enableColumnResizing: true,
+  defaultColumnDef: { resizeMaxSize: Infinity },
+})
+```
+
 ### Notes
 
 - `columnResizeMode: 'onChange'` updates widths as the user drags
 - `columnResizeMode: 'onEnd'` only updates when the user releases the mouse
 - The `table.getTotalSize()` method returns the total width of all visible columns
+- `resizeMaxSize` only affects user drag-resize; auto-sizing/stretch always honor `maxSize`
+- Header labels only truncate with an ellipsis for **string** headers; component headers
+  (e.g. a selection checkbox) are never clipped.
 - Header and body columns share the same internal `<colgroup>`, so wide tables and
   horizontal scrolling do not require custom CSS or ResizeObserver width-sync code.
-- Prefer column definition options (`size`, `minSize`, `maxSize`, `enableResizing`)
+- Prefer column definition options (`size`, `minSize`, `maxSize`, `resizeMaxSize`, `enableResizing`)
   or `defaultColumnDef` for sizing policy. Use CSS only for visual theming.
 
 ### Sizing All Columns
diff --git a/packages/core/src/core.test.ts b/packages/core/src/core.test.ts
index 596c1aa..2c140e4 100644
--- a/packages/core/src/core.test.ts
+++ b/packages/core/src/core.test.ts
@@ -955,6 +955,59 @@ describe('Column Resizing', () => {
     expect(getState().columnSizingInfo.isResizingColumn).toBe(false)
   })
 
+  it('lets user drag-resize past maxSize when resizeMaxSize is higher', () => {
+    const { table, getState } = createTestTable({
+      columns: [
+        columnHelper.accessor('firstName', {
+          header: 'First Name',
+          size: 120,
+          minSize: 100,
+          maxSize: 180,
+          resizeMaxSize: Number.POSITIVE_INFINITY,
+        }),
+      ],
+    })
+    const column = table.getColumn('firstName')!
+    const header = table.getHeaderGroups()[0]!.headers[0]!
+    const resize = header.getResizeHandler()!
+
+    withMockDocument((dispatch) => {
+      resize({ clientX: 0 })
+      dispatch('mousemove', { clientX: 200, preventDefault: vi.fn() })
+      dispatch('mouseup', { clientX: 200 })
+    })
+
+    // clampColumnSize honored resizeMax: width committed past maxSize (120 + 200).
+    expect(getState().columnSizing.firstName).toBe(320)
+    // getSize RENDERS the committed width instead of clamping back to maxSize.
+    expect(column.getSize()).toBe(320)
+  })
+
+  it('still clamps user drag-resize to maxSize when resizeMaxSize is unset (back-compat)', () => {
+    const { table, getState } = createTestTable({
+      columns: [
+        columnHelper.accessor('firstName', {
+          header: 'First Name',
+          size: 120,
+          minSize: 100,
+          maxSize: 180,
+        }),
+      ],
+    })
+    const column = table.getColumn('firstName')!
+    const header = table.getHeaderGroups()[0]!.headers[0]!
+    const resize = header.getResizeHandler()!
+
+    withMockDocument((dispatch) => {
+      resize({ clientX: 0 })
+      dispatch('mousemove', { clientX: 200, preventDefault: vi.fn() })
+      dispatch('mouseup', { clientX: 200 })
+    })
+
+    expect(getState().columnSizing.firstName).toBe(180)
+    expect(column.getSize()).toBe(180)
+  })
+
   it('honors columnResizeMode="onEnd"', () => {
     const { table, getState } = createTestTable({
       columnResizeMode: 'onEnd',
diff --git a/packages/core/src/core/__tests__/column.test.ts b/packages/core/src/core/__tests__/column.test.ts
index bfefb12..86d83f7 100644
--- a/packages/core/src/core/__tests__/column.test.ts
+++ b/packages/core/src/core/__tests__/column.test.ts
@@ -419,6 +419,27 @@ describe('Column sizing min/max bounds', () => {
     expect(table.getColumn('name')!.getSize()).toBe(300)
   })
 
+  it('renders a size up to resizeMaxSize when set above maxSize', () => {
+    const { table } = makeTable([
+      { accessorKey: 'name', header: 'Name', size: 500, maxSize: 300, resizeMaxSize: 600 },
+    ])
+    // getSize's upper clamp is resizeMaxSize (600), not maxSize (300).
+    expect(table.getColumn('name')!.getSize()).toBe(500)
+  })
+
+  it('applies no upper clamp when resizeMaxSize is Infinity', () => {
+    const { table } = makeTable([
+      {
+        accessorKey: 'name',
+        header: 'Name',
+        size: 5000,
+        maxSize: 300,
+        resizeMaxSize: Number.POSITIVE_INFINITY,
+      },
+    ])
+    expect(table.getColumn('name')!.getSize()).toBe(5000)
+  })
+
   it('warns once when minSize > maxSize and resolves to a sane size (min wins)', () => {
     const { table } = makeTable([
       // minSize 400, maxSize 200 — invalid; min wins per documented policy.
diff --git a/packages/core/src/core/column.ts b/packages/core/src/core/column.ts
index 6ffba1a..c6e022b 100644
--- a/packages/core/src/core/column.ts
+++ b/packages/core/src/core/column.ts
@@ -129,6 +129,12 @@ export function createColumn<TData extends RowData, TValue = unknown>(
       const min = ext.minSize
       const max = ext.maxSize
 
+      // A user-set width may render up to `resizeMaxSize` (defaults to `maxSize`).
+      // Auto/stretch widths are already clamped to `maxSize` upstream (in
+      // `computeAutoColumnWidths`), so raising this render ceiling only affects
+      // widths a human dragged — it never lets auto-sizing exceed `maxSize`.
+      const resizeMax = typeof ext.resizeMaxSize === 'number' ? ext.resizeMaxSize : max
+
       // Validate bounds: if a user accidentally sets minSize > maxSize the
       // resulting clamp would silently flip the size. Warn once and resolve
       // by treating minSize as the floor (i.e. min wins). This is documented
@@ -138,13 +144,16 @@ export function createColumn<TData extends RowData, TValue = unknown>(
           warnedInvalidSizeBounds = true
           console.warn(`[yable] column "${id}" has minSize (${min}) > maxSize (${max})`)
         }
-        // Min wins: clamp the raw size up to min, ignoring the broken max.
+      }
+
+      // Min wins on inversion against the resolved upper bound.
+      if (typeof min === 'number' && typeof resizeMax === 'number' && min > resizeMax) {
         return Math.max(raw, min)
       }
 
       let resolved = raw
       if (typeof min === 'number') resolved = Math.max(resolved, min)
-      if (typeof max === 'number') resolved = Math.min(resolved, max)
+      if (typeof resizeMax === 'number') resolved = Math.min(resolved, resizeMax)
       return resolved
     },
     getStart: (position?: ColumnPinningPosition) => {
diff --git a/packages/core/src/core/headers.ts b/packages/core/src/core/headers.ts
index cde32b4..0210a31 100644
--- a/packages/core/src/core/headers.ts
+++ b/packages/core/src/core/headers.ts
@@ -6,12 +6,17 @@ function clampColumnSize<TData extends RowData, TValue>(
   column: Column<TData, TValue>,
   size: number,
 ): number {
-  const { minSize, maxSize } = column.columnDef
+  const { minSize, maxSize, resizeMaxSize } = column.columnDef
   let next = Math.max(size, 30)
 
+  // User drag-resize is capped by `resizeMaxSize` (defaults to `maxSize`), so a
+  // column can be given a `maxSize` for auto-size discipline while still being
+  // draggable past it. `maxSize` continues to cap auto-sizing/stretch elsewhere.
+  const resizeMax = typeof resizeMaxSize === 'number' ? resizeMaxSize : maxSize
+
   if (typeof minSize === 'number') next = Math.max(next, minSize)
-  if (typeof maxSize === 'number' && !(typeof minSize === 'number' && minSize > maxSize)) {
-    next = Math.min(next, maxSize)
+  if (typeof resizeMax === 'number' && !(typeof minSize === 'number' && minSize > resizeMax)) {
+    next = Math.min(next, resizeMax)
   }
 
   return next
diff --git a/packages/core/src/types.ts b/packages/core/src/types.ts
index 894d351..db677ec 100644
--- a/packages/core/src/types.ts
+++ b/packages/core/src/types.ts
@@ -116,6 +116,13 @@ export interface ColumnDefExtensions<TData extends RowData, TValue = unknown> {
   size?: number
   minSize?: number
   maxSize?: number
+  /**
+   * Upper bound for USER drag-resize (defaults to `maxSize`). `maxSize` still
+   * caps auto-sizing/stretch; set this (e.g. `Number.POSITIVE_INFINITY`, or via
+   * `defaultColumnDef` for app-wide) to let a human drag a column past its
+   * auto-size cap.
+   */
+  resizeMaxSize?: number
   flex?: number
   /**
    * Opt out of the React `autoColumnWidth` feature for this column. When `false`
diff --git a/packages/react/src/components/TableHeader.tsx b/packages/react/src/components/TableHeader.tsx
index 8f5cfe7..974b5df 100644
--- a/packages/react/src/components/TableHeader.tsx
+++ b/packages/react/src/components/TableHeader.tsx
@@ -318,6 +318,10 @@ function HeaderCell<TData extends RowData>({
       ? (column.columnDef.header as HeaderRenderer)(header.getContext())
       : (column.columnDef.header ?? header.id)
 
+  // Only string headers ellipsize; component/empty headers (e.g. a selection
+  // checkbox) must never be clipped — see `.yable-th-label` in base.css.
+  const isTextHeader = typeof column.columnDef.header === 'string'
+
   // Mirror TableCell's cellClassName: a column may style its header th with a
   // static class or a function of the header context.
   const headerClassNameDef = column.columnDef.headerClassName
@@ -442,7 +446,7 @@ function HeaderCell<TData extends RowData>({
         className="yable-th-content"
         onPointerDown={canReorder && !pinned ? handleContentPointerDown : undefined}
       >
-        <span>{headerContent}</span>
+        <span className={isTextHeader ? 'yable-th-label' : undefined}>{headerContent}</span>
         {canSort && (
           <SortIndicator direction={sortDirection} index={sortIndex > 0 ? sortIndex : undefined} />
         )}
diff --git a/packages/themes/src/base.css b/packages/themes/src/base.css
index bcbf05f..aa2274e 100644
--- a/packages/themes/src/base.css
+++ b/packages/themes/src/base.css
@@ -157,8 +157,10 @@
   min-height: calc(var(--yable-header-min-height) - var(--yable-header-padding-y) * 2);
 }
 
-/* The label itself ellipsizes; the sort indicator (a later child) stays fixed. */
-.yable-th-content > span:first-child {
+/* Only STRING headers ellipsize (marked `.yable-th-label`); component/empty
+   headers such as a selection checkbox are never clipped. The sort indicator
+   (a later child) stays fixed. */
+.yable-th-content > .yable-th-label {
   min-width: 0;
   overflow: hidden;
   text-overflow: ellipsis;