Body Togs enhance your daily caloric burn by adding a small amount of anatomically correct weight to your arms Whether you're walking, shopping, running errands or exercising, use Body Togs fitness equipment to give yourself that caloric boost Sports training weighted arm sleeves are anatomically designed to fit your arms Wear arm weights to work, while shopping, or even during exercise to give your workout that extra edge Durable construction Velcro closure Rust-proof weights Sold as a set of two (2) arm weights Fabric covers: 72-percent nylon/28-percent spandex Hand washable For sizing, measure the largest part of your forearm: Small/Medium: 8-11 inches (weighs 2 pounds 12 ounces) Large/Extra Large: 11-14 inches (weighs 3 pounds 7 ounces)