Provide Progressive Resistance Exercise for all of your rehabilitative and fitness needs. * 99.998% FREE of soluble proteins (Latex Allergens). No messy powder. Easy to remembe Progressive Resistance System. * LOW PRICE. Closed Loops good for providing lower body exercises. Eliminate the need to tie knots in the Therapy Bands. No seem so no weak spots. * Exercise band & Tubing therapy is the most commonly prescribed exercise modality for rehabilitation, conditioning and training.