Resistance Bands MaterialResistance bands are made of TPE material ,Environmentally friendly and fashionable to prevent belt breakage and provide longer durability. Strength Level Of Resistance BandsTwo different colors correspond to two different strengthsred(15-35 lbs), Black(25-65 lbs),Different strength workout bands can be combined to achieve better fitness effect Body Parts Suitable For Exerciseworkout bands can strengthen your arms, legs, back, biceps, etcYou can also do pull ups and push ups,Shape Body, Physical Therapy, which are very effective for fitness and strength training Home And PortableHaving these five resistance bands is equivalent to having your own gym at homeYou can have a variety of strength levels of fitness without going out, which can save the time to go out "Best Gift For Workout Friends:With fitness bands, you can cooperate with friends in training If you don't have a fitness partner, give them exercise bands " resistance bands