Pair of adjustable aquatic wrist/ankle weights for water aerobics, pool exercise, swimming resistance and general fitness. Suitable for water aerobics and aquatic workouts. Item specifics: Type: Wrist/Ankle Weights · Weight: 2 lb each · Total Weight: 4 lb · Sport/Activity: Swimming, Water Aerobics, Fitness · Color: Blue · Number in Set: 2 · Features: Adjustable · Material: I'd leave blank unless you know exactly what they're made from.