Rope resistance trainer: Swim tether stationary swimming belt is suitable for anyone who wants a nonstop swim in a smaller pool. Waist belt is wrapped with Thickened widened foam, which brings you comfort. Features a waist belt that fits 55 -105cm / 21.6 - 41.4inch waist.High quality: Swim band is made of natural rubber with good stretching force. The adjustable nylon belt is for attached to an elastic tether which you can fasten on the pool's ladder or any other fixed place, enjoy swimming in endless pool.Safe and Convenience: No tools are required and no changes to your home pool or yard. Designed to adapt to in-ground and above-ground pools, outdoor and indoor pools. Effective low-impact workout for swimmers of all ages and proficiency levels.4 meters (13.12FT) long: Suitable for you home pool and small pool and stationary swimming. The cord is strong which is suitalbe for Adult, Kid, Pro, Amateur use.Fit for Anyone: Static swimming belt, progressive swim trainer, aqua jogger belt. Swimming training equipment for kids and adults. It is an excellent option for busy people because it allows you to exercise at home, at your own convenience.