diff --git a/www/conservancy/templates/supporter/form_partial.html b/www/conservancy/templates/supporter/form_partial.html
index f11ea3f77cb0a4a0bd6f45d881316c8b359f43c7..4e0cba7d7f3dd2952a645c4b77afa1a1b58cf911 100644
--- a/www/conservancy/templates/supporter/form_partial.html
+++ b/www/conservancy/templates/supporter/form_partial.html
@@ -124,6 +124,7 @@ This partial accepts these optional parameters:
               <option value="FittedLadiesXL">Fitted Women's XL</option>
             </optgroup>
           </select>
+          <p class="inline"><a href="https://gildanonline.com/sizechart" target="_blank" title="T-shirt size chart">Size information</a></p>
         </div>
       </div>