Link to your individual collections by creating a new linklist in the Navigation section of the admin.
You can then have it appear here by choosing your new linklist under Customize Theme / Sidebar.
Custom Slim Fit Flag Crest Small Pony Short Sleeve Polo Shirt Red/Blue
Size Pit to Pit (Inches) Length (Inches) Chest Range (Inches)
Small 19.5 26 35-37
Medium 20.5 27 38-40
Large 21.5 28 41-43
XL 22.5 29 44-45
XXL 23.5 30 46-48