The resistance belt is fine for swim training and exercise. It is easy to use and can help improve any swim stroke and will tone your whole body quickly. Features: Training rope helps improve swimming and adjust the whole body quickly. Popular aquatic training aid to build strength and endurance. Lightweight and fast-drying,ome with storage mesh bag. The small strap is black and is used to fix the elastic rope on the shore of the swimming pool. Swimmers use the elasticity and resistance of the elastic rope to exercise. Specifications: Material: Latex Color: Yellow Type1: Item size: 9 * 6 * 3 Item weight: 180g / 6.3ounce Package weight: 200g / 7.1ounce Type2: Item weight: 9 * 6 *4m Item weight: 220g / 7.8ounce Package weight: 240g / 8.5ounce Package size: 250 * 100 * 50mm / 9.8 * 3.9 * 2.0in Packing List: 1 * Elastic rope 1 * Swimming belt 1 * Strap 1 * Net bag