One swim resistance belt kit includes ankle buckle, elastic rope, bag. Swimming resistance band is made of , which brings you comfort. One resistance band is strong, suitable for both adults and children. is for installation. can the swim belt to any pole around the swim pool. Features - Color: Black - Material: SBR, PP, - Size(Ankle Buckle): About 39.00X10.00X3.00cm/15.33X3.93X1.18inch - Size(Elastic Bands): About 110.00x2.00x1.50 cm/43.31x0.79x0.59 inch - Designed for someone who wants a nonstop swim, to athletes who want a training work out. - The swim sports swim trainer is easy to use, will help improve any swim style and will tone your whole quickly. - It is all adults and children who want strength training. - Low Impact Training and all pools. Perfect for swim training and exercises. - Great way to improve all swimming strokes and general fitness. It is very useful. Package list: 2 x Elastic Bands 2 x Ankle Buckles 1 x Storage Bag 2 x Belts