Smartwool Thermal Merino Rib Beanie Size:OS Early-stage Meta-Rocker geometry promotes a

Early-stage Meta-Rocker geometry promotes a natural heel-to-toe transition that reduces fatigue on high-mileage days

It packs down small and layers clean over a base layer

Regular fit with straight legs layers easily over a base layer without bunching or binding

no guessing

and an elastic waistband with internal drawcord locks in your fit without fuss

Smartwool Thermal Merino Rib Beanie Size:OS Early-stage Meta-Rocker geometry promotes aWhen temps drop on the trail or at the trailhead, the Thermal Merino Rib Beanie is our go to cold weather lid for runners and hikers who run warm but still need real insulation. Thermal weight merino regulates heat naturally and wicks moisture, so you stay comfortable without overheating. The ribbed knit stretches to fit a wide range of head sizes and layers cleanly under a helmet. Thermal weight merino wool delivers genuine cold weather insulation