Professional Resistance Bands: : Resistance bands have 5 colors that represent different levels of resistance: Yellow-10 LBS (4.5 kg), Blue-20 LBS (9.1 kg), Grn-30 LBS (13.6 kg), Black -40 LBS (18 kg)), Red-50 LBS (22, 8kg). You can use them together to train up to 150 pounds. Any level of training staff can be used for rubber band fitness, corresponding to the strength of the gradual training process. . Build your own gym: : This fitness band consists of five resistance bands, a drinker, a waterproof carrying case, two padded handles and two ankle straps that allow you to perform various strength training exercises. . Fitness Band With High Elasticity Handle: : This premium expander is of the highest quality and is made of 100% natural rubber with high elasticity that does not deform. Each tubular band is double layered and carefully constructed to offer maximum resistance . Multifunction Resistance Bands: : Perfect for yoga, pilates and physical therapy, the fitness band works the muscles of your arms, legs, back, buttocks, chest and shoulders without the need for expensive fitness members or fitness equipment. .