85%/15% cotton/nylon. Unisex. One size fits all. GI Government Issued style. Made In USA. Thermal boot socks. Keeps your feet warm in extremely cold weather. Great for outdoor activities and could be worn around the house to keep feet warm. HW-Heavy Weight. Comfortable fit.
1 contribute to the mechanical structure of animals, including humans, e.g. keratin in hair and fingernails, and fibrous proteins such as collagen in tendons. 2  enable animals to move, e.g. myosin in muscle.  facilitate transport of smaller molecules around animals' bodies, e.g. haemoglobin.
Proteins are polymers. The monomers which make up proteins are called amino acids.. Amino acids consist of an amino group (NH3), carboxyl group (COOH), a hydrogen, and an r group (any carbon chain or hydrogen). The variation in r groups allows for the diversity of amino acids, and thus the variety of proteins.