The Reebok 5 lb Adjustable Ankle Weights are a set of two black ankle weights that each weigh 2.5 lbs, and also have removable weighted bags that can be removed and held in hands while running. made of polyester and nylon. Designed for unisex adults, these ankle weights are suitable for gym training, weight lifting, and running, providing a convenient and effective way to enhance strength and endurance during workouts. The adjustable feature allows for personalized weight customization to meet individual fitness goals.