diff --git a/frontend/components/common/Select.tsx b/frontend/components/common/Select.tsx
new file mode 100644
index 000000000..f06a64447
--- /dev/null
+++ b/frontend/components/common/Select.tsx
@@ -0,0 +1,50 @@
+import { styled } from "stitches.config";
+
+export function Select({
+  values,
+  onChange,
+  selected,
+}: {
+  values: { id: string; name: string }[];
+  onChange?: (e: React.ChangeEvent<HTMLSelectElement>) => void;
+  selected: string;
+}) {
+  return (
+    <S_Select onChange={onChange}>
+      {values.map((value) => {
+        return (
+          <option
+            key={value.id}
+            value={value.id}
+            selected={value.id === selected}
+          >
+            {value.name}
+          </option>
+        );
+      })}
+    </S_Select>
+  );
+}
+
+const S_Select = styled("select", {
+  all: "unset",
+  width: "100%",
+  padding: "$2 $4",
+  backgroundColor: "$bgLighter",
+  backgroundImage: `url('data:image/svg+xml;utf8,<svg width="1rem" color="white" xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke="currentColor"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M19 9l-7 7-7-7" /></svg>')`,
+  backgroundPositionX: "95%",
+  backgroundPositionY: "50%",
+  backgroundRepeat: "no-repeat",
+  borderRadius: "$rounded",
+  cursor: "pointer",
+  fontWeight: "$body",
+  fontSize: "$sm",
+
+  "&::selection": {
+    fontWeight: "$bold",
+  },
+
+  "&:focus": {
+    outline: "2px solid $theme",
+  },
+});
diff --git a/frontend/components/layout/MobileNav.tsx b/frontend/components/layout/MobileNav.tsx
index e81ef50b5..fba862f06 100644
--- a/frontend/components/layout/MobileNav.tsx
+++ b/frontend/components/layout/MobileNav.tsx
@@ -18,10 +18,18 @@ export function MobileNav({ isExpanded }: { isExpanded: boolean }) {
           return (
             <Fragment key={navItem.title}>
               <S_GroupTitle>{navItem.title}</S_GroupTitle>
-              {navItem.items.map((item) => {
+              {navItem.items.map((item, i, arr) => {
                 return (
                   <NextLink key={item} href="/">
-                    <S_NavLink>
+                    <S_NavLink
+                      type={
+                        i === 0
+                          ? "first"
+                          : i + 1 === arr.length
+                          ? "last"
+                          : undefined
+                      }
+                    >
                       <S_NavLinkImage
                         src={`/img/nav-icons/${item.replace(" ", "")}.png`}
                       />
@@ -50,6 +58,8 @@ const S_Container = styled("nav", {
   zIndex: 5,
   overflowY: "auto",
   paddingBottom: "$6",
+  // TODO: same for Safari
+  overscrollBehavior: "contain",
 
   "@sm": {
     display: "none",
@@ -78,7 +88,6 @@ const S_LinksContainer = styled("div", {
   justifyContent: "center",
   gridAutoColumns: "1fr",
   gridAutoRows: "4rem",
-  paddingX: "$24",
 });
 
 const S_NavLinkImage = styled("img", {
@@ -95,6 +104,7 @@ const S_GroupTitle = styled("div", {
   marginBottom: "$1",
   backgroundColor: "$bg",
   fontWeight: "$bold",
+  borderRadius: "$rounded",
 });
 
 const S_NavLink = styled("div", {
@@ -106,8 +116,20 @@ const S_NavLink = styled("div", {
   backgroundColor: "$bg",
   paddingX: "$2",
   fontSize: "$sm",
+  marginX: "$12",
 
-  "&:last-child": {
-    borderBottom: "3px solid $bgLighter",
+  "@xs": {
+    marginX: "$24",
+  },
+
+  variants: {
+    type: {
+      first: {
+        borderRadius: "$rounded $rounded 0 0",
+      },
+      last: {
+        borderRadius: "0 0 $rounded $rounded",
+      },
+    },
   },
 });
diff --git a/frontend/components/tournament/InfoBanner.tsx b/frontend/components/tournament/InfoBanner.tsx
index c7e613762..2c06dd3ec 100644
--- a/frontend/components/tournament/InfoBanner.tsx
+++ b/frontend/components/tournament/InfoBanner.tsx
@@ -74,11 +74,15 @@ function dayNumber(date: string) {
 }
 
 const S_Container = styled("div", {
-  width: "min(48rem, 100%)",
+  width: "100%",
   padding: "$6",
   background: "var(--background)",
-  borderRadius: "$rounded",
   color: "var(--text)",
+
+  "@md": {
+    borderRadius: "$rounded",
+    width: "48rem",
+  },
 });
 
 const S_TopRow = styled("div", {
diff --git a/frontend/components/tournament/MapPoolTab.tsx b/frontend/components/tournament/MapPoolTab.tsx
index 9b66629a0..cc0b00d2f 100644
--- a/frontend/components/tournament/MapPoolTab.tsx
+++ b/frontend/components/tournament/MapPoolTab.tsx
@@ -1,4 +1,4 @@
-import { styled } from "@stitches/react";
+import { styled } from "stitches.config";
 import { useTournamentData } from "hooks/data/useTournamentData";
 import { stages, modesShort } from "@sendou-ink/shared/constants";
 import type { Mode } from "@sendou-ink/api/common";
@@ -64,13 +64,24 @@ const S_InfoSquare = styled("div", {
   fontSize: "$xl",
   backgroundImage: `url(/svg/background-pattern.svg)`,
   backgroundColor: "$bgLighter",
-  borderRadius: "$rounded",
+
+  "@xs": {
+    borderRadius: "$rounded",
+  },
 });
 
 const S_Container = styled("div", {
   display: "grid",
-  gridTemplateColumns: "repeat(4, 1fr)",
+  gridTemplateColumns: "1fr",
   gap: "1rem",
+
+  "@xs": {
+    gridTemplateColumns: "repeat(2, 1fr)",
+  },
+
+  "@sm": {
+    gridTemplateColumns: "repeat(4, minmax(1px, 200px))",
+  },
 });
 
 const S_EmphasizedText = styled("span", {
@@ -82,8 +93,11 @@ const S_StageImageContainer = styled("div", {
 });
 
 const S_StageImage = styled("img", {
-  width: "14rem",
-  borderRadius: "$rounded",
+  width: "100%",
+
+  "@xs": {
+    borderRadius: "$rounded",
+  },
 
   variants: {
     filter: {
diff --git a/frontend/pages/o/[organization]/[tournament].tsx b/frontend/pages/o/[organization]/[tournament].tsx
index 786318009..7f0f9c23d 100644
--- a/frontend/pages/o/[organization]/[tournament].tsx
+++ b/frontend/pages/o/[organization]/[tournament].tsx
@@ -2,36 +2,46 @@ import { InfoBanner } from "components/tournament/InfoBanner";
 import { Tab } from "components/common/Tab";
 import { styled } from "stitches.config";
 import { MapPoolTab } from "components/tournament/MapPoolTab";
+import { Select } from "components/common/Select";
+import { useState } from "react";
 
 const tabs = [
-  { name: "Overview", id: "info" },
-  { name: "Map Pool", id: "map-pool" },
-  { name: "Bracket", id: "bracket" },
-  { name: "Teams (23)", id: "teams" },
-  { name: "Streams (4)", id: "streams" },
+  { name: "Overview", id: "info", component: null },
+  { name: "Map Pool", id: "map-pool", component: <MapPoolTab /> },
+  { name: "Bracket", id: "bracket", component: null },
+  { name: "Teams (23)", id: "teams", component: null },
+  { name: "Streams (4)", id: "streams", component: null },
 ];
 
 export default function TournamentPage() {
+  const [activeTab, setActiveTab] = useState(tabs[0].id);
   return (
     <S_Container>
       <InfoBanner />
-      <Tab.Group>
-        <Tab.List tabsCount={tabs.length}>
-          {tabs.map((tab) => (
-            <Tab key={tab.id}>{tab.name}</Tab>
-          ))}
-        </Tab.List>
-        <Tab.Panels>
-          <Tab.Panel>Content 1</Tab.Panel>
-          <Tab.Panel>
-            <MapPoolTab />
-          </Tab.Panel>
-          <Tab.Panel>Content 3</Tab.Panel>
-          <Tab.Panel>Content 4</Tab.Panel>
-          <Tab.Panel>Content 5</Tab.Panel>
-          <Tab.Panel>Content 6</Tab.Panel>
-        </Tab.Panels>
-      </Tab.Group>
+      <S_TabsContainer>
+        <Tab.Group>
+          <Tab.List tabsCount={tabs.length}>
+            {tabs.map((tab) => (
+              <Tab key={tab.id}>{tab.name}</Tab>
+            ))}
+          </Tab.List>
+          <Tab.Panels>
+            {tabs.map((tab) => (
+              <Tab.Panel key={tab.id}>{tab.component}</Tab.Panel>
+            ))}
+          </Tab.Panels>
+        </Tab.Group>
+      </S_TabsContainer>
+      <S_MobileContent>
+        <S_SelectContainer>
+          <Select
+            values={tabs}
+            onChange={(e) => setActiveTab(e.target.value)}
+            selected={activeTab}
+          />
+        </S_SelectContainer>
+        {tabs.find((tab) => tab.id === activeTab)!.component}
+      </S_MobileContent>
     </S_Container>
   );
 }
@@ -42,3 +52,26 @@ const S_Container = styled("div", {
   alignItems: "center",
   gap: "$8",
 });
+
+const S_TabsContainer = styled("div", {
+  display: "none",
+
+  "@sm": {
+    display: "flex",
+    flexDirection: "column",
+    alignItems: "center",
+    gap: "$8",
+  },
+});
+
+const S_SelectContainer = styled("div", {
+  width: "12rem",
+  margin: "0 auto",
+  marginBottom: "$8",
+});
+
+const S_MobileContent = styled("div", {
+  "@sm": {
+    display: "none",
+  },
+});