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/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);