?EXERCISE RESISTANCE BANDS SET:The resistance bands come with 5 different resistance level, includes Black (30 lbs.),Green(25 lbs.),Red (20 lbs.), Green(15 lbs.) and Yellow (10 lbs.)Exercise band can be used alone or combination. The total resistance set can bear up to 100Ib. ?HIGHEST QUALITY MATERIALS: The resistance bands is made of natural latex is kind to the environment. Strong wear resistance and perfect elasticity, steel metal buckle for stronger strength, non-slip handle, comfortable and absorbent. ?RESISTANCE BANDS FOR DAILY USE:Reinforced links, and heavy-duty carabiners, these anti-snap exercise ressistence tubes are designed to withstand intense daily exercise sessions. Build Muscle, Burn Fat, Improve Flexibility.