You Will Receive: the package includes 4 pieces of swim discs, convenient to grip, enough for your training use, replacement and sharing needs, offer nice underwater resistance for your trainingEasy to Hold: our water aerobics equipment measures about 7.1 inches or 18 cm in diameter, with a big hole and small hole, easy for you to hold and grip, to offer simple underwater resistance when you grip it during your water exerciseWaterproof Material: the pool disc is made of quality EVA foam, reliable to use, stable in texture, not easy to fade, break or deform, easy to use, can achieve an effective training effectNice Buoyancy: our water resistance weights with good buoyancy, can provide an ideal amount of resistance during underwater exercise They are designed in white and blue colors, bring you a pleasant visual experienceWide Applications: our pool exercise equipment is lightweight and comfortable, ideal for various aquatic sports, such as swimming, water exercise, deep water aerobics, water aerobic exercise and more