For chilly trail miles and pre-dawn stand sits, the Vigor is our go-to beanie for anyone who runs warm. ActiveTemp tech adjusts to your body temperature, so you stay dry instead of soaked, while the 1.1 oz flat-seam build slides under a helmet without bulk.

• ActiveTemp thermo-regulating technology adjusts to your body temperature to keep you cool, dry, and comfortable during high-exertion efforts
• 93% polyester, 7% spandex knit wicks sweat and breathes well, so it won't turn into a damp cap on a humid cold-morning run
• Flat-seam construction cuts down on pressure points and hot spots, and the stretch keeps the fit snug without squeezing
• Weighs just 1.1 oz and fits under helmets, so it works for cold-weather trail runs, hikes, bike rides, and early-season hunts
• Works as a standalone cap or an added layer under a hood or helmet, and packs down small enough for a jacket pocket or running vest. Machine wash, hang dry.