MULTI-FUNCTIONAL EXERCISE SYSTEM - All-in-one design, can be used as a resistance band, ankle resistance training, leg exercise band, jump trainer, speed training and more. 5 DIFFERENT RESISTANCE LEVELS - Just one resistance level won't work your glutes. That's why we offer you 3 different levels of resistance. Choose the level that suits you best. PREMIUM WATERPROOF FABRIC - To protect your waist and ankles from the friction caused by training sports, both the waistband and ankle straps are made of thickened waterproof fabric, which greatly improves your sports experience. You can train barefoot at home, indoors or outdoors How to Choose Different Levels of Resistance Bands - Based on your height, first choose the application that is right for you. Then select the appropriate frequency bands to achieve different resistance levels. Feel your burn instantly - we shorten the length of each resistance band and increase it's pounds for better exercise. So if your legs aren't that strong, you'll feel hard to move at first, but if you can hold on for a while, you'll feel the burn. So feel your burn now!