Layer one matters most. But will any flatter and fit like our new thermal top? Lightweight grid fleece performs as a breathable base or solo layer. Flatlock seams reduce chafing for long-lasting comfort.

We love it for: cold weather running

67% recycled polyester, 27% polyester & 6% spandex
Lightweight grid fleece
Warm, stretchy & quick-drying
Tailored fit 
Flatlock seams
Locker loop
Elbow patches
Machine wash cold, tumble dry low, don't bleach
Designed in California, made abroad