The dexshell ultraflex waterproof socks are comfortable and waterproof highly wicking and anti bacterial socks making them an incredibly flexible pair of everyday waterproof socks these dexshell waterproof socks have a three layer construction which includes the durable outer layer the 100 waterproof and highly breathable porelle membrane lining and then an eco friendly bamboo rayon inner to provide the naturally moisture absorbent and anti bacterial performance for an excellent level of comfort