diff --git a/cypress/component/SideMenu.cy.tsx b/cypress/component/SideMenu.cy.tsx
index 396382b..fa173ed 100644
--- a/cypress/component/SideMenu.cy.tsx
+++ b/cypress/component/SideMenu.cy.tsx
@@ -1,5 +1,128 @@
-describe("SideMenu.cy.tsx", () => {
-  it("playground", () => {
-    // cy.mount()
+import { useState } from "react";
+import { LeftMenu, RightMenu } from "../../src/components/SideMenu";
+
+// Test Fixtures
+function newTestApp(position: "left" | "right") {
+  const Menu = position === "left" ? LeftMenu : RightMenu;
+
+  return function TestApp() {
+    const [isMenuOpen, setIsMenuOpen] = useState(false);
+
+    return (
+      <div
+        data-cy="app"
+        className="appContainer"
+        style={{ overflowX: "hidden" }}
+      >
+        <button
+          data-cy="toggle-menu"
+          onClick={() => setIsMenuOpen((prev) => !prev)}
+        >
+          Open Menu
+        </button>
+        <Menu isOpen={isMenuOpen} onClose={() => setIsMenuOpen(false)}>
+          Menu Contents
+        </Menu>
+        <div data-cy="main-content">Main Content</div>
+      </div>
+    );
+  };
+}
+
+// Tests
+function menuTest(position: "left" | "right") {
+  const isLeft = position === "left";
+
+  // 1. Check initial state
+  cy.dataCy(`${position}-menu`)
+    .as("menu")
+    .should("not.be.visible")
+
+    .contains("Menu Contents")
+    .should("not.be.visible");
+
+  // 2. Open menu
+  cy.dataCy("toggle-menu")
+    .as("toggle")
+    .click()
+
+    .get("@menu")
+    .should("be.visible")
+
+    .contains("Menu Contents")
+    .should("be.visible");
+
+  // 3. Close menu with button
+  cy.dataCy("close-menu")
+    .as("close")
+    .click()
+
+    .get("@menu")
+    .should("not.be.visible")
+
+    .contains("Menu Contents")
+    .should("not.be.visible");
+
+  // 4. Reopen menu, verify interactivity, then close with underlay
+  cy.get("@toggle")
+    .click()
+
+    .get("@menu")
+    .should("be.visible")
+    .click("center")
+
+    .get("@menu")
+    .should("be.visible")
+
+    .dataCy("app")
+    .click(isLeft ? "topRight" : "topLeft")
+
+    .get("@menu")
+    .should("not.be.visible");
+}
+
+beforeEach(() => {
+  cy.disableTransitions();
+});
+
+afterEach(() => {
+  cy.enableTransitions();
+});
+
+describe("LeftMenu Tests", () => {
+  beforeEach(() => {
+    const TestApp = newTestApp("left");
+    cy.mount(<TestApp />);
+  });
+
+  afterEach(() => {
+    cy.enableTransitions();
+  });
+
+  it("works in portrait", () => {
+    cy.viewport("iphone-6");
+    menuTest("left");
+  });
+
+  it("works in landscape", () => {
+    cy.viewport("iphone-6", "landscape");
+    menuTest("left");
+  });
+});
+
+describe("RightMenu Tests", () => {
+  beforeEach(() => {
+    const TestApp = newTestApp("right");
+    cy.mount(<TestApp />);
+  });
+
+  it("works in portrait", () => {
+    cy.viewport("iphone-6");
+    menuTest("right");
+  });
+
+  it("works in landscape", () => {
+    cy.viewport("iphone-6", "landscape");
+    menuTest("right");
   });
 });
diff --git a/src/App.module.css b/src/App.module.css
index 5e5331a..ce4b11a 100644
--- a/src/App.module.css
+++ b/src/App.module.css
@@ -4,53 +4,7 @@
   overflow: hidden;
 }
 
-.leftMobileMenu {
-  height: 100vh;
-  width: 0;
-  position: fixed;
-  z-index: 30;
-  top: 0;
-  left: 0;
-  background: white;
-  overflow-x: hidden;
-  transition: 0.5s ease-out;
-  box-shadow: 2px 0 5px rgba(0, 0, 0, 0.2);
-}
-
-.leftMenuWrapper {
-  position: absolute;
-  right: 0;
-}
-
-.leftMobileMenu .topNav {
-  display: flex;
-}
-
-.leftMenuWrapper .closeButton {
-  margin: 10px 10px 10px auto;
-}
-
-.rightMobileMenu {
-  height: 100vh;
-  width: 0;
-  position: fixed;
-  z-index: 20;
-  top: 0;
-  right: 0;
-  background: white;
-  overflow-x: hidden;
-  transition: 0.5s ease-out;
-  box-shadow: -2px 0 5px rgba(0, 0, 0, 0.2);
-}
-
-.rightMenuWrapper {
-  position: absolute;
-  left: 0;
-}
-
-/* Large - Landscape Tablets / Desktops */
-/* Medium - Portrait Tablets */
-/* Horizontal layout, vertically scrolling picker and palette content */
+/* Large */
 @media (min-width: 992px),
   (min-width: 568px) and (max-width: 991px) and (orientation: portrait) {
   .appContainer {
@@ -87,8 +41,7 @@
   }
 }
 
-/* Medium - Landscape Phones */
-/* Horizontal layout, side menu, vertical tabbed picker */
+/* Landscape Phone */
 @media (min-width: 568px) and (max-width: 991px) and (orientation: landscape) {
   .appContainer {
   }
@@ -116,38 +69,6 @@
     flex: 1;
   }
 
-  .leftMobileMenu {
-  }
-
-  .leftMobileMenu.open {
-    width: 80vh;
-  }
-
-  .leftMenuWrapper {
-    width: 80vh;
-  }
-
-  .leftMobileMenu .topNav {
-  }
-
-  .leftMenuWrapper .closeButton {
-  }
-
-  .rightMobileMenu {
-  }
-
-  .rightMobileMenu.open {
-    width: 80vh;
-  }
-
-  .rightMenuWrapper {
-    width: 80vh;
-  }
-
-  .rightMobileMenu .closeButton {
-    margin: 10px;
-  }
-
   .tabbedContainer {
     max-height: 100vh;
     overflow-y: scroll;
@@ -172,8 +93,7 @@
   }
 }
 
-/* Small - Portrait Phones*/
-/* Vertical layout, side menu, horizontal tabbed picker */
+/* Portrait Phone */
 @media (max-width: 567px) {
   .appContainer {
   }
@@ -205,38 +125,6 @@
   .mobileBetaZone {
   }
 
-  .leftMobileMenu {
-  }
-
-  .leftMobileMenu.open {
-    width: 80%;
-  }
-
-  .leftMenuWrapper {
-    width: 80vw;
-  }
-
-  .leftMobileMenu .topNav {
-  }
-
-  .leftMenuWrapper .closeButton {
-  }
-
-  .rightMobileMenu {
-  }
-
-  .rightMobileMenu.open {
-    width: 80%;
-  }
-
-  .rightMenuWrapper {
-    width: 80vw;
-  }
-
-  .rightMobileMenu .closeButton {
-    margin: 10px;
-  }
-
   .tabbedContainer {
     display: flex;
     overflow-x: scroll;
diff --git a/src/App.tsx b/src/App.tsx
index a6e6f3e..f8df026 100644
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -2,14 +2,15 @@ import { useState } from "react";
 import styles from "./App.module.css";
 import ColorPicker from "./components/ColorPicker/ColorPicker";
 import ColorValues from "./components/ColorValues/ColorValues";
+import { LeftMenu, RightMenu } from "./components/SideMenu";
 import clsx from "clsx";
 
 function App() {
-  const [rightMenuOpen, setRightMenuOpen] = useState(false);
-  const [leftMenuOpen, setLeftMenuOpen] = useState(false);
+  const [isRightMenuOpen, setIsRightMenuOpen] = useState(false);
+  const [isLeftMenuOpen, setIsLeftMenuOpen] = useState(false);
 
-  const toggleRightMenu = () => setRightMenuOpen(!rightMenuOpen);
-  const toggleLeftMenu = () => setLeftMenuOpen(!leftMenuOpen);
+  const toggleRightMenu = () => setIsRightMenuOpen(!isRightMenuOpen);
+  const toggleLeftMenu = () => setIsLeftMenuOpen(!isLeftMenuOpen);
 
   const RightMenuButton = () => (
     <button className={styles.rightMenuButton} onClick={toggleRightMenu}>
@@ -29,9 +30,11 @@ function App() {
           <LeftMenuButton />
           <RightMenuButton />
         </div>
+
         <div className={styles.mobileLeftNav}>
           <LeftMenuButton />
         </div>
+
         <div className={styles.mobileAlphaZone}>
           <div className={styles.tabbedContainer}>
             <div className={clsx(styles.tab, styles.colorPickerContainer)}>
@@ -42,42 +45,28 @@ function App() {
             </div>
           </div>
         </div>
+
         <div className={styles.mobileBetaZone}>
           <div className={styles.paletteEditorContainer}></div>
         </div>
+
         <div className={styles.mobileRightNav}>
           <RightMenuButton />
         </div>
-      </div>
 
-      <div
-        className={clsx(styles.leftMobileMenu, {
-          [styles.open]: leftMenuOpen,
-        })}
-      >
-        <div className={styles.leftMenuWrapper}>
-          <div className={styles.topNav}>
-            <button className={styles.closeButton} onClick={toggleLeftMenu}>
-              ×
-            </button>
-          </div>
-          <div className={styles.paletteLibraryContainer}>User Info</div>
-        </div>
-      </div>
+        <LeftMenu
+          isOpen={isLeftMenuOpen}
+          onClose={() => setIsLeftMenuOpen(false)}
+        >
+          <div>User Info</div>
+        </LeftMenu>
 
-      <div
-        className={clsx(styles.rightMobileMenu, {
-          [styles.open]: rightMenuOpen,
-        })}
-      >
-        <div className={styles.rightMenuWrapper}>
-          <div className={styles.topNav}>
-            <button className={styles.closeButton} onClick={toggleRightMenu}>
-              ×
-            </button>
-          </div>
+        <RightMenu
+          isOpen={isRightMenuOpen}
+          onClose={() => setIsRightMenuOpen(false)}
+        >
           <div className={styles.paletteLibraryContainer}>Palette Library</div>
-        </div>
+        </RightMenu>
       </div>
 
       <div className={styles.mainContent}>
@@ -85,10 +74,12 @@ function App() {
           <div className={styles.colorPickerContainer}>
             <ColorPicker />
           </div>
+
           <div className={styles.colorValuesContainer}>
             <ColorValues />
           </div>
         </div>
+
         <div className={styles.betaZone}>
           <div className={styles.paletteEditorContainer}></div>
           <div className={styles.paletteLibraryContainer}></div>
diff --git a/src/components/SideMenu/SideMenu.module.css b/src/components/SideMenu/SideMenu.module.css
new file mode 100644
index 0000000..bb0cb1d
--- /dev/null
+++ b/src/components/SideMenu/SideMenu.module.css
@@ -0,0 +1,88 @@
+.sideMenu {
+  height: 100vh;
+  width: 0;
+  position: fixed;
+  z-index: 20;
+  top: 0;
+  background: white;
+  overflow-x: hidden;
+  transition: 0.3s ease-out;
+}
+
+.sideMenuUnderlay {
+  position: fixed;
+  top: 0;
+  left: 0;
+  right: 0;
+  bottom: 0;
+  z-index: 20;
+  background: rgba(0, 0, 0, 0);
+  transition: background-color 0.3s;
+  pointer-events: none;
+}
+
+.sideMenuUnderlay.open {
+  background: rgba(0, 0, 0, 0.2);
+  pointer-events: auto;
+}
+
+.left.sideMenu {
+  left: 0;
+  box-shadow: 2px 0 5px rgba(0, 0, 0, 0.2);
+}
+
+.right.sideMenu {
+  right: 0;
+  box-shadow: -2px 0 5px rgba(0, 0, 0, 0.2);
+}
+
+.menuWrapper {
+  position: absolute;
+}
+
+.left.menuWrapper {
+  right: 0;
+}
+
+.right.menuWrapper {
+  left: 0;
+}
+
+.topNav {
+  width: 100%;
+  display: flex;
+}
+
+.right.sideMenu .closeButton {
+  margin: 10px;
+}
+
+.left.sideMenu .closeButton {
+  margin: 10px 10px 10px auto;
+}
+
+/* Landscape Phone */
+@media (min-width: 568px) and (max-width: 991px) and (orientation: landscape) {
+  .left.sideMenu.open,
+  .left.menuWrapper {
+    width: 80vh;
+  }
+
+  .right.sideMenu.open,
+  .right.menuWrapper {
+    width: 80vh;
+  }
+}
+
+/* Portrait Phone */
+@media (max-width: 567px) {
+  .left.sideMenu.open,
+  .left.menuWrapper {
+    width: 80vw;
+  }
+
+  .right.sideMenu.open,
+  .right.menuWrapper {
+    width: 80vw;
+  }
+}
diff --git a/src/components/SideMenu/SideMenu.tsx b/src/components/SideMenu/SideMenu.tsx
new file mode 100644
index 0000000..7b0802d
--- /dev/null
+++ b/src/components/SideMenu/SideMenu.tsx
@@ -0,0 +1,73 @@
+import type { ReactNode } from "react";
+import clsx from "clsx";
+import styles from "./SideMenu.module.css";
+
+interface SideMenuProps {
+  isOpen: boolean;
+  onClose: () => void;
+  children: ReactNode;
+}
+
+interface BaseMenuProps extends SideMenuProps {
+  position: "left" | "right";
+}
+
+function BaseMenu({ isOpen, onClose, children, position }: BaseMenuProps) {
+  const isLeftMenu = position === "left";
+
+  const handleUnderlayClick = (e: React.MouseEvent<HTMLDivElement>) => {
+    if (e.target === e.currentTarget) {
+      onClose();
+    }
+  };
+
+  return (
+    <div
+      className={clsx(styles.sideMenuUnderlay, { [styles.open]: isOpen })}
+      onClick={handleUnderlayClick}
+    >
+      <div
+        data-cy={`${position}-menu`}
+        className={clsx(
+          styles.sideMenu,
+          isLeftMenu ? styles.left : styles.right,
+          { [styles.open]: isOpen },
+        )}
+        onClick={(e) => e.stopPropagation()}
+      >
+        <div
+          className={clsx(
+            styles.menuWrapper,
+            isLeftMenu ? styles.left : styles.right,
+          )}
+        >
+          <div className={styles.topNav}>
+            <button
+              data-cy="close-menu"
+              className={styles.closeButton}
+              onClick={onClose}
+            >
+              ×
+            </button>
+          </div>
+          {children}
+        </div>
+      </div>
+    </div>
+  );
+}
+
+function newSideMenu(position: "left" | "right") {
+  return function SideMenu({ isOpen, onClose, children }: SideMenuProps) {
+    return (
+      <BaseMenu isOpen={isOpen} onClose={onClose} position={position}>
+        {children}
+      </BaseMenu>
+    );
+  };
+}
+
+const LeftMenu = newSideMenu("left");
+const RightMenu = newSideMenu("right");
+
+export { LeftMenu, RightMenu };
diff --git a/src/components/SideMenu/index.ts b/src/components/SideMenu/index.ts
new file mode 100644
index 0000000..2be693a
--- /dev/null
+++ b/src/components/SideMenu/index.ts
@@ -0,0 +1,2 @@
+import { LeftMenu, RightMenu } from "./SideMenu";
+export { LeftMenu, RightMenu };
diff --git a/src/main.tsx b/src/main.tsx
index 360a3c3..eff7ccc 100644
--- a/src/main.tsx
+++ b/src/main.tsx
@@ -1,11 +1,10 @@
-import { StrictMode } from 'react'
-import { createRoot } from 'react-dom/client'
-import './index.css'
-import App from './App.tsx'
+import { StrictMode } from "react";
+import { createRoot } from "react-dom/client";
+import "./index.css";
+import App from "./App.tsx";
 
-createRoot(document.getElementById('root')!).render(
+createRoot(document.getElementById("root")!).render(
   <StrictMode>
     <App />
   </StrictMode>,
-)
-
+);