diff --git a/.changeset/good-towns-sit.md b/.changeset/good-towns-sit.md
new file mode 100644
index 0000000..db61d14
--- /dev/null
+++ b/.changeset/good-towns-sit.md
@@ -0,0 +1,5 @@
+---
+'@perimetre/ui': patch
+---
+
+Fixed button sizes for extra large screens
diff --git a/.changeset/ripe-taxis-rest.md b/.changeset/ripe-taxis-rest.md
new file mode 100644
index 0000000..3aa8010
--- /dev/null
+++ b/.changeset/ripe-taxis-rest.md
@@ -0,0 +1,5 @@
+---
+'@perimetre/ui': patch
+---
+
+Changed all buttons on micro bird to be 16px on all screen sizes
diff --git a/packages/ui/src/components/Button/brands/Button.microbird-commercial.brand.ts b/packages/ui/src/components/Button/brands/Button.microbird-commercial.brand.ts
index e5b612a..1ae313e 100644
--- a/packages/ui/src/components/Button/brands/Button.microbird-commercial.brand.ts
+++ b/packages/ui/src/components/Button/brands/Button.microbird-commercial.brand.ts
@@ -8,7 +8,7 @@ import { cva } from '@/lib/cva';
  * No JS overrides needed unless there are structural differences.
  */
 export const buttonMicroBirdCommercialVariants = cva({
-  base: 'pui:normal-case pui:font-light pui:text-xs pui:lg:text-sm pui:2xl:typo-base pui:px-5',
+  base: 'pui:normal-case pui:font-light pui:text-base pui:px-5',
   variants: {
     variant: {
       primary: [
diff --git a/packages/ui/src/components/Button/brands/Button.microbird-school.brand.ts b/packages/ui/src/components/Button/brands/Button.microbird-school.brand.ts
index c639eb4..299078b 100644
--- a/packages/ui/src/components/Button/brands/Button.microbird-school.brand.ts
+++ b/packages/ui/src/components/Button/brands/Button.microbird-school.brand.ts
@@ -8,7 +8,7 @@ import { cva } from '@/lib/cva';
  * No JS overrides needed unless there are structural differences.
  */
 export const buttonMicroBirdSchoolVariants = cva({
-  base: 'pui:normal-case pui:font-light pui:text-xs pui:lg:text-sm pui:2xl:typo-base pui:px-5',
+  base: 'pui:normal-case pui:font-light pui:text-base pui:px-5',
   variants: {
     variant: {
       primary: [