Black Mountain Products resistance bands are made from the highest quality rubber to ensure maximum durability. Each resistance band is provided with a cushioned foam handlefor a comfortable grip during routines. Training with resistance bands is the perfect way to help repair torn rotator cuffs, elbows, bad knees and for general rehabilitation. In addition, these resistance bands are compact and portable allowing you to work out anywhere. This six piece set offers all resistances from beginner to expert levels, forming a resistance weight range from 2-40lbs. of weight!