diff --git a/.changeset/calm-triggers-render.md b/.changeset/calm-triggers-render.md
new file mode 100644
index 000000000..b74c404c0
--- /dev/null
+++ b/.changeset/calm-triggers-render.md
@@ -0,0 +1,5 @@
+---
+"@radui/ui": patch
+---
+
+Fix Select and Combobox trigger callback type inference.
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 1b916cca4..4c79604dc 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -87,3 +87,6 @@ jobs:
 
       - name: Check public API surface
         run: npm run check:api-surface
+
+      - name: Check consumer types
+        run: npm run check:consumer-types
diff --git a/docs/app/docs/components/select/content.mdx b/docs/app/docs/components/select/content.mdx
index 7ef4f2bdc..f8cac9202 100644
--- a/docs/app/docs/components/select/content.mdx
+++ b/docs/app/docs/components/select/content.mdx
@@ -1,6 +1,6 @@
 import Documentation from '@/components/layout/Documentation/Documentation';
 import SelectExample from "./docs/example_1"
-import { code, largeListCode, anatomy, ariaReferences, keyboardShortcuts, api_documentation } from "./docs/codeUsage"
+import { code, largeListCode, renderValueCode, anatomy, ariaReferences, keyboardShortcuts, api_documentation } from "./docs/codeUsage"
 
 <Documentation
     title="Select"
@@ -10,6 +10,14 @@ import { code, largeListCode, anatomy, ariaReferences, keyboardShortcuts, api_do
         <SelectExample />
     </Documentation.ComponentHero>
 
+    <Documentation.Section title="Custom trigger value">
+        Before a value is selected, the trigger displays its children as a placeholder. Once selected, it displays the item's label: its `label` prop, its text content, or its value as a fallback. Items hidden inside custom components may display their value until the list mounts.
+        Use `renderValue` to customize the selected display. It receives the value and resolved label, and is called only when a value is selected. Returning `null` or `undefined` falls back to the default display.
+        <Documentation.CodeBlock language="tsx">
+            {renderValueCode.javascript.code}
+        </Documentation.CodeBlock>
+    </Documentation.Section>
+
     <Documentation.Section title="Large Lists">
         Use a controlled value and keep each option's `value` and `label` stable when a Select has hundreds of options.
         This incremental pattern keeps keyboard navigation intact by mounting more rows before focus reaches the boundary.
@@ -21,7 +29,7 @@ import { code, largeListCode, anatomy, ariaReferences, keyboardShortcuts, api_do
     <Documentation.ApiReference
         anatomy={anatomy.code}
         tables={api_documentation}
-        order={['root', 'item']}
+        order={['root', 'trigger', 'item']}
     />
 
     <Documentation.Table title="Keyboard Interactions" columns={keyboardShortcuts.columns} data={keyboardShortcuts.data} />
diff --git a/docs/app/docs/components/select/docs/codeUsage.js b/docs/app/docs/components/select/docs/codeUsage.js
index 87f5576a6..d5a7e955f 100644
--- a/docs/app/docs/components/select/docs/codeUsage.js
+++ b/docs/app/docs/components/select/docs/codeUsage.js
@@ -10,10 +10,12 @@ import {
     DOCS_KEYBOARD_SHORTCUTS
 } from '../../shared/keyboardShortcuts';
 import root_api from './component_api/root.tsx';
+import trigger_api from './component_api/trigger.tsx';
 import item_api from './component_api/item.tsx';
 
 const example_1_SourceCode = await getSourceCodeFromPath('docs/app/docs/components/select/docs/example_1.tsx');
 const largeList_SourceCode = await getSourceCodeFromPath('docs/app/docs/components/select/docs/large-list.tsx');
+const renderValue_SourceCode = await getSourceCodeFromPath('docs/app/docs/components/select/docs/render-value.tsx');
 const scss_SourceCode = await getSourceCodeFromPath('styles/themes/components/select.scss');
 const anatomy_SourceCode = await getSourceCodeFromPath('docs/app/docs/components/select/docs/anatomy.tsx');
 
@@ -26,10 +28,15 @@ export const largeListCode = {
     javascript: { code: largeList_SourceCode }
 };
 
+export const renderValueCode = {
+    javascript: { code: renderValue_SourceCode }
+};
+
 export const anatomy = { code: anatomy_SourceCode };
 
 export const api_documentation = {
     root: root_api,
+    trigger: trigger_api,
     item: item_api
 };
 
diff --git a/docs/app/docs/components/select/docs/component_api/item.tsx b/docs/app/docs/components/select/docs/component_api/item.tsx
index d0049b250..3db57efe4 100644
--- a/docs/app/docs/components/select/docs/component_api/item.tsx
+++ b/docs/app/docs/components/select/docs/component_api/item.tsx
@@ -8,6 +8,7 @@ const data = {
     ],
     data: [
         { prop: { name: "value*", info_tooltips: "The value of this option." }, type: "string", default: "--" },
+        { prop: { name: "label", info_tooltips: "Text used for the selected display, search, and typeahead." }, type: "string", default: "Item text, then value" },
         { prop: { name: "disabled", info_tooltips: "Disables this option." }, type: "boolean", default: "false" },
         { prop: { name: "className", info_tooltips: "Additional CSS classes." }, type: "string", default: '""' }
     ]
diff --git a/docs/app/docs/components/select/docs/component_api/trigger.tsx b/docs/app/docs/components/select/docs/component_api/trigger.tsx
new file mode 100644
index 000000000..4b595dfc0
--- /dev/null
+++ b/docs/app/docs/components/select/docs/component_api/trigger.tsx
@@ -0,0 +1,15 @@
+const data = {
+    name: "Trigger",
+    description: "Opens the select and displays the selected value.",
+    columns: [
+        { name: "Prop", id: "prop" },
+        { name: "Type", id: "type" },
+        { name: "Default", id: "default" }
+    ],
+    data: [
+        { prop: { name: "children", info_tooltips: "Placeholder shown when no value is selected." }, type: "ReactNode", default: "--" },
+        { prop: { name: "renderValue", info_tooltips: "Renders the selected value and resolved label. Return null or undefined to use the default display." }, type: "(value: string, label: string) => ReactNode", default: "--" }
+    ]
+}
+
+export default data
diff --git a/docs/app/docs/components/select/docs/render-value.tsx b/docs/app/docs/components/select/docs/render-value.tsx
new file mode 100644
index 000000000..3c40cf556
--- /dev/null
+++ b/docs/app/docs/components/select/docs/render-value.tsx
@@ -0,0 +1,19 @@
+"use client"
+
+import Select from "@radui/ui/Select"
+
+export default function CustomSelectValue() {
+    return (
+        <Select.Root defaultValue="auto">
+            <Select.Trigger aria-label="Move" renderValue={(value: string) => value === "auto" ? "whip-l" : value}>
+                Choose a move
+            </Select.Trigger>
+            <Select.Portal>
+                <Select.Content>
+                    <Select.Item value="auto">Auto (whip-l)</Select.Item>
+                    <Select.Item value="manual">Manual</Select.Item>
+                </Select.Content>
+            </Select.Portal>
+        </Select.Root>
+    )
+}
diff --git a/package.json b/package.json
index 3f165c501..655a5a3d3 100644
--- a/package.json
+++ b/package.json
@@ -401,6 +401,7 @@
     "check:clarity": "node scripts/clarity-audit.cjs",
     "check:theme-coverage": "node scripts/theme-coverage.cjs",
     "check:api-surface": "node scripts/check-public-api-surface.mjs --check",
+    "check:consumer-types": "tsc -p scripts/type-tests/tsconfig.json",
     "validate:changesets": "node scripts/validate-changesets.mjs",
     "validate:publish": "node scripts/validate-publish-package.cjs",
     "build-components:esbuild": "npm run compile-components:esbuild && npm run process-components",
diff --git a/scripts/type-tests/select-trigger.tsx b/scripts/type-tests/select-trigger.tsx
new file mode 100644
index 000000000..442e293fb
--- /dev/null
+++ b/scripts/type-tests/select-trigger.tsx
@@ -0,0 +1,21 @@
+import Select from '@radui/ui/Select';
+import Combobox from '@radui/ui/Combobox';
+import type { ComponentProps } from 'react';
+
+const selectProps: ComponentProps<typeof Select.Trigger> = { 'data-testid': 'select', customProp: 'select' };
+const comboboxProps: ComponentProps<typeof Combobox.Trigger> = { 'data-custom-state': 'ready', customProp: 'combobox' };
+<Select.Trigger {...selectProps} />;
+<Combobox.Trigger {...comboboxProps} />;
+
+<Select.Trigger renderValue={(value, label) => {
+    const display: string = `${value.toUpperCase()}: ${label.toUpperCase()}`;
+    // @ts-expect-error Selected values are strings, not numbers.
+    value.toFixed(2);
+    return display;
+}} />;
+
+<Combobox.Trigger renderValue={(value, label) => {
+    // @ts-expect-error The label is a string, not a number.
+    label.toFixed(2);
+    return `${value.toUpperCase()}: ${label.toUpperCase()}`;
+}} />;
diff --git a/scripts/type-tests/tsconfig.json b/scripts/type-tests/tsconfig.json
new file mode 100644
index 000000000..a3e57a6c6
--- /dev/null
+++ b/scripts/type-tests/tsconfig.json
@@ -0,0 +1,13 @@
+{
+  "compilerOptions": {
+    "target": "ES2020",
+    "module": "ESNext",
+    "moduleResolution": "bundler",
+    "jsx": "react-jsx",
+    "strict": true,
+    "noEmit": true,
+    "skipLibCheck": false,
+    "types": ["react"]
+  },
+  "include": ["./*.tsx"]
+}
diff --git a/src/components/ui/Combobox/fragments/ComboboxTrigger.tsx b/src/components/ui/Combobox/fragments/ComboboxTrigger.tsx
index a02a5bd4d..9d928c398 100644
--- a/src/components/ui/Combobox/fragments/ComboboxTrigger.tsx
+++ b/src/components/ui/Combobox/fragments/ComboboxTrigger.tsx
@@ -9,6 +9,7 @@ type ComboboxTriggerElement = React.ElementRef<typeof ComboboxPrimitive.Trigger>
 export type ComboboxTriggerProps = React.ComponentPropsWithoutRef<typeof ComboboxPrimitive.Trigger> & {
     customRootClass?: string;
     placeholder?: boolean;
+    renderValue?: (value: string, label: string) => React.ReactNode;
 };
 
 const ComboboxTrigger = React.forwardRef<ComboboxTriggerElement, ComboboxTriggerProps>(({ customRootClass, children, disabled, placeholder, className, ...props }, forwardedRef) => {
@@ -27,7 +28,7 @@ const ComboboxTrigger = React.forwardRef<ComboboxTriggerElement, ComboboxTrigger
             {children}
         </ComboboxPrimitive.Trigger>
     );
-});
+}) as React.ForwardRefExoticComponent<ComboboxTriggerProps & React.RefAttributes<ComboboxTriggerElement>>;
 
 ComboboxTrigger.displayName = 'ComboboxTrigger';
 
diff --git a/src/components/ui/Select/fragments/SelectTrigger.tsx b/src/components/ui/Select/fragments/SelectTrigger.tsx
index 37bd6a4bf..8c3f683cb 100644
--- a/src/components/ui/Select/fragments/SelectTrigger.tsx
+++ b/src/components/ui/Select/fragments/SelectTrigger.tsx
@@ -9,6 +9,7 @@ type SelectTriggerElement = React.ElementRef<typeof ComboboxPrimitive.Trigger>;
 export type SelectTriggerProps = React.ComponentPropsWithoutRef<typeof ComboboxPrimitive.Trigger> & {
     customRootClass?: string;
     placeholder?: boolean;
+    renderValue?: (value: string, label: string) => React.ReactNode;
 };
 
 const SelectTrigger = React.forwardRef<SelectTriggerElement, SelectTriggerProps>(({ customRootClass, children, className, disabled, placeholder, ...props }, forwardedRef) => {
@@ -29,7 +30,7 @@ const SelectTrigger = React.forwardRef<SelectTriggerElement, SelectTriggerProps>
 
         </ComboboxPrimitive.Trigger>
     );
-});
+}) as React.ForwardRefExoticComponent<SelectTriggerProps & React.RefAttributes<SelectTriggerElement>>;
 
 SelectTrigger.displayName = 'SelectTrigger';