evo.com | Outdoor Research Ball Caps > The Outdoor Research Crescent Fleece Cap keeps things cozy without turning up the heat too much. A soft recycled polyester and merino wool blend helps regulate temperature and manage moisture, while a touch of spandex gives it a flexible, stay-put fit. Lightweight and easy to layer, it's a go-to for crisp trail miles, travel days, and chilly walks around town. ActiveFresh(TM) Odor Control 70% Recycled Polyester, 29% Merino Wool, 1% Spandex S/M Fits a head circumference of 21"-22.5". L/XL Fits a head circumference of 22.5"-24". Breathable, Lightweight, Quick Drying, Wicking | Outdoor Research Crescent Fleece Cap 2027 - S/M in Gray Size Small/Medium | Spandex/Wool/Polyester