PolarTec Silk Weight Long Underwear, Mens, Set - Shirt & Pants This is for both the Men's Shirt and Pants! Same Size Each. 100% Moisture Wicking Polyester Used by US Military Perfect Base Layer in Any Conditions Silk Weight - Lightest Available You can return this item for any reason and get a full refund: no shipping charges. The item must be returned in new and unused condition. Go to Your Orders to start the return Print the return shipping label Ship it!