When you want the performance of Capilene, but want to keep your neck nice and toasty, pull-on and zip-up the Men's Patagonia Capilene 3 Midweight Zip Neck long underwear top.
Sandstone Stripe/forge Grey, Classic Navy,
S, M, L, Xl, Xxl
User Review: Very comfortable which is important when left on for multiple days and nights. The long zip is great for temperature regulation.