Black Mountain Products' heavyweight resistance bands are some of the strongest resistance bands on the market! This exercise band set comes with three resistance bands of various weights. Orange Resistance Band (30-35lbs) Purple Resistance Band (40-45lbs) Atomic Green Resistance ...Black Mountain Products' heavyweight resistance bands are some of the strongest resistance bands on the market! This exercise band set comes with three resistance bands of various weights. Orange Resistance Band (30-35lbs) Purple Resistance Band (40-45lbs) Atomic Green Resistance Band (70-75lbs) Each resistance band is a perfect add-on to any resistance band set you have or for anyone looking to get full optimization out of your resistance training.Resistance training is a great alternative to free weights allowing for easy travel and storage.