diff --git a/packages/core/src/renderer/components/+namespaces/__snapshots__/namespace-tree-view.test.tsx.snap b/packages/core/src/renderer/components/+namespaces/__snapshots__/namespace-tree-view.test.tsx.snap
index ee2475fad5..637eedd553 100644
--- a/packages/core/src/renderer/components/+namespaces/__snapshots__/namespace-tree-view.test.tsx.snap
+++ b/packages/core/src/renderer/components/+namespaces/__snapshots__/namespace-tree-view.test.tsx.snap
@@ -871,6 +871,7 @@ exports[`<NamespaceTreeView /> once the subscribe resolves renders namespace wit
                       <span
                         class="subnamespaceBadge"
                         data-testid="subnamespace-badge-for-service-1-1"
+                        id="namespace-details-badge-for-service-1-1"
                       >
                         S
                       </span>
diff --git a/packages/core/src/renderer/components/+namespaces/namespace-tree-view.tsx b/packages/core/src/renderer/components/+namespaces/namespace-tree-view.tsx
index 47df0cda7f..5124424055 100644
--- a/packages/core/src/renderer/components/+namespaces/namespace-tree-view.tsx
+++ b/packages/core/src/renderer/components/+namespaces/namespace-tree-view.tsx
@@ -50,7 +50,10 @@ function NonInjectableNamespaceTreeView({ root, namespaceStore, getDetailsUrl }:
               {child.getName()}
             </Link>
             {" "}
-            <SubnamespaceBadge namespace={child} />
+            <SubnamespaceBadge
+              id={`namespace-details-badge-for-${child.getId()}`}
+              namespace={child}
+            />
           </>
         )}
       >
diff --git a/packages/core/src/renderer/components/+namespaces/subnamespace-badge.tsx b/packages/core/src/renderer/components/+namespaces/subnamespace-badge.tsx
index a2eb0dc602..94ba56d532 100644
--- a/packages/core/src/renderer/components/+namespaces/subnamespace-badge.tsx
+++ b/packages/core/src/renderer/components/+namespaces/subnamespace-badge.tsx
@@ -2,23 +2,31 @@ import styles from "./subnamespace-badge.module.scss";
 
 import React from "react";
 import type { Namespace } from "../../../common/k8s-api/endpoints";
+import { Tooltip } from "../tooltip";
 
 interface SubnamespaceBadgeProps extends React.HTMLAttributes<HTMLSpanElement> {
   namespace: Namespace;
+  id: string;
 }
 
-export function SubnamespaceBadge({ namespace, ...other }: SubnamespaceBadgeProps) {
+export function SubnamespaceBadge({ namespace, id, ...other }: SubnamespaceBadgeProps) {
   if (!namespace.getAnnotations().find(annotation => annotation.includes("hnc.x-k8s.io/subnamespace-of"))) {
     return null;
   }
 
   return (
-    <span
-      className={styles.subnamespaceBadge}
-      data-testid={`subnamespace-badge-for-${namespace.getId()}`}
-      {...other}
-    >
-      S
-    </span>
+    <>
+      <span
+        className={styles.subnamespaceBadge}
+        data-testid={`subnamespace-badge-for-${namespace.getId()}`}
+        id={id}
+        {...other}
+      >
+        S
+      </span>
+      <Tooltip targetId={id}>
+        Subnamespace
+      </Tooltip>
+    </>
   );
 }
\ No newline at end of file