Buff® Thermonet® is a fiber innovation developed in collaboration with Primaloft®: super lightweight, extremely thin, with outstanding heat retention, quick-drying, soft, and made with 70% recycled PET bottles. It offers maximum comfort in freezing temperatures. The tubular scarf for cold weather can be taken anywhere and worn in many variations. Tubular scarves can also be used as masks. However, they do not replace a medical face mask and provide only a light protection for the wearer and those around them. Buff® performance head and neckwear is not intended to be used as a medical-grade face mask or as an effective measure to prevent diseases, ailments, or the spread of viruses. Buff® does not produce products that prevent diseases or the spread of viruses and does not claim to manufacture such products.