diff --git a/src/components/MasonryGrid/MasonryGrid.hooks.ts b/src/components/MasonryGrid/MasonryGrid.hooks.ts
new file mode 100644
index 0000000..a8d5948
--- /dev/null
+++ b/src/components/MasonryGrid/MasonryGrid.hooks.ts
@@ -0,0 +1,74 @@
+import {
+  CSSProperties,
+  Ref,
+  useEffect,
+  useRef,
+  useState,
+} from 'react';
+
+export type MasonryConfig = {
+  minColumns?: number;
+  maxColumns?: number;
+  minColumnWidth?: number;
+  gap?: number;
+  columnGap?: number;
+  rowGap?: number;
+};
+
+type UseMasonryResult = {
+  ref: Ref<HTMLDivElement>;
+  columnCount: number;
+  wrapperStyle: CSSProperties;
+};
+
+export const useMasonry = (config: MasonryConfig): UseMasonryResult => {
+  const {
+    minColumns = 1,
+    maxColumns = 4,
+    minColumnWidth = 200,
+    gap = 16,
+    columnGap,
+    rowGap,
+  } = config;
+
+  const resolvedColumnGap = columnGap ?? gap;
+  const resolvedRowGap = rowGap ?? gap;
+
+  const clampedMinColumns = Math.min(minColumns, maxColumns);
+  const clampedMaxColumns = Math.max(minColumns, maxColumns);
+
+  const ref = useRef<HTMLDivElement>(null);
+  const [columnCount, setColumnCount] = useState(minColumns);
+
+  useEffect(() => {
+    const element = ref.current;
+    if (!element) {
+      return;
+    }
+
+    const updateColumns = (containerWidth: number): void => {
+      const effectiveGap = parseFloat(getComputedStyle(element).getPropertyValue('--masonry-column-gap')) || resolvedColumnGap;
+      const rawColumns = Math.floor((containerWidth + effectiveGap) / (minColumnWidth + effectiveGap));
+      const clampedColumns = rawColumns > 0 ? rawColumns : clampedMinColumns;
+      setColumnCount(Math.min(clampedMaxColumns, Math.max(clampedMinColumns, clampedColumns)));
+    };
+
+    const resizeObserver = new ResizeObserver(([entry]) => {
+      const containerWidth = entry.contentBoxSize?.[0]?.inlineSize ?? entry.contentRect.width;
+      updateColumns(containerWidth);
+    });
+
+    resizeObserver.observe(element);
+    updateColumns(element.offsetWidth);
+    return () => resizeObserver.disconnect();
+  }, [clampedMinColumns, clampedMaxColumns, minColumnWidth, resolvedColumnGap]);
+
+  return {
+    ref,
+    columnCount,
+    wrapperStyle: {
+      ['--masonry-column-gap' as string]: `${resolvedColumnGap}px`,
+      ['--masonry-row-gap' as string]: `${resolvedRowGap}px`,
+    },
+  };
+};
diff --git a/src/components/MasonryGrid/MasonryGrid.module.scss b/src/components/MasonryGrid/MasonryGrid.module.scss
new file mode 100644
index 0000000..29d297b
--- /dev/null
+++ b/src/components/MasonryGrid/MasonryGrid.module.scss
@@ -0,0 +1,11 @@
+.masonry-grid {
+  display: grid;
+  gap: var(--masonry-column-gap);
+  align-items: start;
+
+  &-column {
+    display: flex;
+    flex-direction: column;
+    gap: var(--masonry-row-gap);
+  }
+}
diff --git a/src/components/MasonryGrid/MasonryGrid.module.scss.d.ts b/src/components/MasonryGrid/MasonryGrid.module.scss.d.ts
new file mode 100644
index 0000000..ca8dc4c
--- /dev/null
+++ b/src/components/MasonryGrid/MasonryGrid.module.scss.d.ts
@@ -0,0 +1,2 @@
+export declare const masonryGrid: string;
+export declare const masonryGridColumn: string;
diff --git a/src/components/MasonryGrid/MasonryGrid.stories.tsx b/src/components/MasonryGrid/MasonryGrid.stories.tsx
new file mode 100644
index 0000000..367c608
--- /dev/null
+++ b/src/components/MasonryGrid/MasonryGrid.stories.tsx
@@ -0,0 +1,68 @@
+import type { Meta, StoryObj } from '@storybook/react';
+
+import { MasonryGrid } from './MasonryGrid';
+
+const SAMPLE_ITEMS = [
+  { height: 120, color: '#c7f2d3' },
+  { height: 200, color: '#fde8c8' },
+  { height: 80, color: '#d4e4fb' },
+  { height: 160, color: '#f9d4d4' },
+  { height: 100, color: '#e8d5fb' },
+  { height: 220, color: '#d4f5fb' },
+  { height: 140, color: '#fbf3d4' },
+  { height: 90, color: '#fbd4ee' },
+  { height: 180, color: '#d4fbdf' },
+  { height: 110, color: '#fbddd4' },
+  { height: 130, color: '#d4d9fb' },
+  { height: 75, color: '#f2fbd4' },
+];
+
+const meta = {
+  title: 'Masonry Grid',
+  component: MasonryGrid,
+  parameters: {
+    layout: 'padded',
+  },
+  tags: ['autodocs'],
+  argTypes: {
+    minColumns: { control: { type: 'range', min: 1, max: 6, step: 1 } },
+    maxColumns: { control: { type: 'range', min: 1, max: 8, step: 1 } },
+    minColumnWidth: { control: { type: 'range', min: 80, max: 400, step: 10 } },
+    gap: { control: { type: 'range', min: 0, max: 48, step: 2 } },
+    columnGap: { control: { type: 'range', min: 0, max: 48, step: 2 } },
+    rowGap: { control: { type: 'range', min: 0, max: 48, step: 2 } },
+  },
+} satisfies Meta<typeof MasonryGrid>;
+
+export default meta;
+type Story = StoryObj<typeof meta>;
+
+const SampleChildren = SAMPLE_ITEMS.map((item, index) => (
+  <div
+    key={index}
+    style={{
+      height: item.height,
+      background: item.color,
+      borderRadius: 8,
+      display: 'flex',
+      alignItems: 'center',
+      justifyContent: 'center',
+      fontWeight: 600,
+      color: '#555',
+      fontSize: 13,
+    }}
+  >
+    #{index + 1} · {item.height}px
+  </div>
+));
+
+export const Default: Story = {
+  args: {
+    minColumns: 1,
+    maxColumns: 4,
+    minColumnWidth: 150,
+    columnGap: 12,
+    rowGap: 12,
+  },
+  render: (args) => <MasonryGrid {...args}>{SampleChildren}</MasonryGrid>,
+};
diff --git a/src/components/MasonryGrid/MasonryGrid.tsx b/src/components/MasonryGrid/MasonryGrid.tsx
new file mode 100644
index 0000000..4dd0f40
--- /dev/null
+++ b/src/components/MasonryGrid/MasonryGrid.tsx
@@ -0,0 +1,61 @@
+import React, { Children } from 'react';
+
+import { MasonryConfig, useMasonry } from './MasonryGrid.hooks';
+
+import styles from './MasonryGrid.module.scss';
+
+/**
+ * MasonryGrid
+ *
+ * Props:
+ *   minColumns     {number}  Minimum number of columns (default: 1)
+ *   maxColumns     {number}  Maximum number of columns (default: 4)
+ *   minColumnWidth {number}  Minimum column width in px used to compute column count (default: 200)
+ *   gap            {number}  Shorthand for both columnGap and rowGap (default: 16)
+ *   columnGap      {number}  Horizontal gap between columns in px (overrides gap)
+ *   rowGap         {number}  Vertical gap between items in px (overrides gap)
+ * 
+ *   children       {node[]}  Items to lay out
+ *   className      {string}  Class name applied to the wrapper div
+ *   style          {object}  Inline styles applied to the wrapper div
+ *
+ * CSS vars (set on the wrapper, overridable externally):
+ *   --masonry-column-gap
+ *   --masonry-row-gap
+ */
+export interface MasonryGridProps extends MasonryConfig {
+  children?: React.ReactNode;
+  className?: string;
+  style?: React.CSSProperties;
+}
+
+export const MasonryGrid = ({
+  children,
+  className,
+  style,
+  ...props
+}: MasonryGridProps) => {
+  const { ref, columnCount, wrapperStyle } = useMasonry(props);
+
+  // Distribute children into columns top-to-bottom, left-to-right:
+  const columns = Array.from({ length: columnCount }, () => [] as React.ReactNode[]);
+  Children.forEach(children, (child, index) => {
+    columns[index % columnCount].push(child);
+  });
+
+  return (
+    <div ref={ref} className={className} style={{ ...wrapperStyle, ...style }}>
+      <div className={styles.masonryGrid} style={{ gridTemplateColumns: `repeat(${columnCount}, 1fr)` }}>
+        {columns.map((column, columnIndex) => (
+          <div key={columnIndex} className={styles.masonryGridColumn}>
+            {column.map((child, rowIndex) => (
+              <div key={rowIndex}>
+                {child}
+              </div>
+            ))}
+          </div>
+        ))}
+      </div>
+    </div>
+  );
+};
diff --git a/src/components/MasonryGrid/index.ts b/src/components/MasonryGrid/index.ts
new file mode 100644
index 0000000..d76b216
--- /dev/null
+++ b/src/components/MasonryGrid/index.ts
@@ -0,0 +1 @@
+export * from './MasonryGrid';
diff --git a/src/components/Select/Select.module.scss b/src/components/Select/Select.module.scss
index c1a6639..440f0b0 100644
--- a/src/components/Select/Select.module.scss
+++ b/src/components/Select/Select.module.scss
@@ -14,8 +14,6 @@
 
       user-select: none;
       width: 100%;
-      min-height: var(--min-height);
-      padding: calc(0.5rem - var(--border-width)) calc(0.75rem - var(--border-width));
 
       &[data-clearable="true"] {
         border-top-right-radius: 0;
diff --git a/src/components/Select/Select.stories.tsx b/src/components/Select/Select.stories.tsx
index 31aa1b8..ba38be9 100644
--- a/src/components/Select/Select.stories.tsx
+++ b/src/components/Select/Select.stories.tsx
@@ -27,6 +27,12 @@ const meta: Meta<typeof Select> = {
       table: { category: 'Behavior' },
     },
     onChange: { table: { disable: true } },
+    size: {
+      control: 'select',
+      options: ['small', 'normal', 'large'],
+      description: 'The size of the select.',
+      table: { category: 'Appearance' },
+    },
     value: { table: { disable: true } },
   },
 };
@@ -38,6 +44,7 @@ export const Text: Story = {
   name: 'Text',
   args: {
     disabled: false,
+    size: 'normal',
     options: [
       { value: 'apple', label: 'Apple' },
       { value: 'banana', label: 'Banana' },
@@ -53,6 +60,7 @@ export const Numeric: Story = {
   name: 'Numeric',
   args: {
     disabled: false,
+    size: 'normal',
     options: [
       { value: 1, label: 'Critical' },
       { value: 2, label: 'High' },
@@ -68,6 +76,7 @@ export const CustomItemComponents: Story = {
   name: 'Custom Item Components',
   args: {
     disabled: false,
+    size: 'normal',
     options: [
       {
         value: '7b90a423-1979-4e61-a30b-b19d663b3e43',
@@ -94,6 +103,7 @@ export const ControlledValue: Story = {
   },
   args: {
     disabled: false,
+    size: 'normal',
     options: [
       { value: 'apple', label: 'Apple' },
       { value: 'banana', label: 'Banana' },
@@ -109,6 +119,7 @@ export const ManyItems: Story = {
   name: 'Many (200+) Items',
   args: {
     disabled: false,
+    size: 'normal',
     options: Array.from({ length: 200 }, (_, i) => ({
       value: i + 1,
       label: `Item ${i + 1}`,
diff --git a/src/components/Select/Select.tsx b/src/components/Select/Select.tsx
index 6cca790..010859c 100644
--- a/src/components/Select/Select.tsx
+++ b/src/components/Select/Select.tsx
@@ -14,6 +14,7 @@ import {
   ChevronUp,
 } from 'lucide-react';
 
+import { ElementSize } from '../../types';
 import { getStyleClassNames, sx } from '../../utils/getStyleClassNames';
 
 import styles from './Select.module.scss';
@@ -34,6 +35,7 @@ export interface SelectProps extends Omit<
   'multiple' |
   'onChange' |
   'placeholder' |
+  'size' |
   'value'
 > {
   defaultValue?: SelectValue | null;
@@ -42,6 +44,7 @@ export interface SelectProps extends Omit<
   onChange?: (value: SelectValue | null) => void;
   options: SelectOption[];
   placeholder?: ReactNode;
+  size?: ElementSize;
   value?: SelectValue | null;
 }
 
@@ -58,6 +61,7 @@ export const Select = forwardRef<SelectRef, SelectProps>(({
   placeholder = 'Select...',
   readOnly,
   required,
+  size = 'normal',
   type: _type,
   value,
   ...triggerProps
@@ -82,11 +86,16 @@ export const Select = forwardRef<SelectRef, SelectProps>(({
         intent: 'secondary',
         variant: 'ghost',
         border: true,
+        size,
       }), className)}
     >
       <BaseSelect.Value>
         {(val: SelectValue | null) => {
-          const opt = options.find((o) => o.value === val) ?? null;
+
+          /* BaseUI may pass undefined instead of null when the selected value is null, so use loose
+           * equality for null-valued options to match both.
+           */
+          const opt = options.find((o) => (o.value === null ? val == null : o.value === val)) ?? null;
           if (opt === null) {
             return placeholder;
           }
diff --git a/src/index.ts b/src/index.ts
index 2f7a13c..4a9c446 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -16,6 +16,7 @@ export * from './components/InputDateTime';
 export * from './components/InputPanel';
 export * from './components/InputText';
 export * from './components/InputTextArea';
+export * from './components/MasonryGrid';
 export * from './components/Menu';
 export * from './components/PdfViewer';
 export * from './components/Radio';
diff --git a/src/style/sizes.module.scss b/src/style/sizes.module.scss
index 4c257a5..1c987f7 100644
--- a/src/style/sizes.module.scss
+++ b/src/style/sizes.module.scss
@@ -19,7 +19,9 @@
   box-sizing: border-box;
   min-width: $size;
   min-height: $size;
-  padding: calc(#{$padding} - var(--border-width)); // Assume always used with variants (1px border, even if invisible)
+
+  // Assume always used with variants (1px border, even if invisible)
+  padding: calc(#{$padding} - var(--border-width)) calc(#{$padding} + 0.125rem - var(--border-width));
 
   &.collapse-padding {
     margin: 0 calc($padding * -1);