The Otso Head Tubes, weighing less than 30 grams, are the ideal accessory for any outdoor activity when temperatures drop and we want to feel protected from the cold and wind. They have multiple applications around our head and neck. They are breathable, super quick-drying, and the "tubes" are seamless. Made of 100% polyester with the OEKO-TEX certification. The polyester allows for excellent sublimation, enabling us to offer unique and attractive designs.