TheraBand Resistance Bands, 5 Foot, 15 Count Professional Latex Elastic Bands For Upper & Lower Body Exercise, Physical Therapy, Pilates, Home Workouts, Rehab, Special Heavy Black, Advanced Level 1 Professional grade exercise and resistance bands for stretching, toning, and conditioning all major muscle groups, increases both strength & flexibility subtly and naturally without weights Simple & easy to use product for upper & lower body exercises that can be performed anywhere, is ideal for conditioning & rehabbing muscles as well as specific training for yoga, crossfit, lower body pilates, rotator cuff strengthening, and running Color-coded Progressive Resistance system allows users to recognize improvement as it happens as you grow stronger you can move up to the next color, making these bands ideal for strength training and physical therapy programs Highest quality natural rubber latex resistance bands are recognized by professionals in clinics and hospitals as the original system of progressive resistance; the best resistance bands for stretching, strengthening, and rehabilitation