BUFF Switch Polar Solid Neck Warmer. This innovative neck warmer combines PrimaLoft® insulation technology with exceptional versatility—an integrated drawcord allows seamless conversion to a beanie for adaptive cold-weather protection. Constructed from 97% post-consumer fabric offcuts, it exemplifies circular design principles while delivering genuine performance benefits. The adjustable fit mechanism enables precise temperature regulation, accommodating varying activity levels and wind conditions. A sophisticated solution for environmentally conscious athletes seeking multifunctional outerwear without compromise.