POWER-WEB COMBO offers a unique advantage of two resistance levels in one, offering greater flexibility and value. It is identical in size, band, and weight as the original POWER-WEB and made with the same high quality construction and materials. POWER-WEB COMBO is available in a combination of two resistance levels from various POWER-WEBS. Level 0 (Beige) Beginners, stroke patients, persons with serious hand injuries, establishing range of motion. Level 1 (Yellow) Children, geriatrics, beginning strength programs, athritics, carpel tunnel. Level 2 (Red) Most popular for all around use - such as strengthening, flexibility, injury rehabilitation, sports, fitness. Level 3 (Green) For more advanced rehabilitation, sports, strengthening, fitness, injury prevention. Level 4 (Blue) Sports strengthening for all major sports - for those that want to build real strength, very popular for pro sports training. Level 5 (Black) A real challenge for advanced strengthening, used where hand strength is vital - such as karate, weight lifters, golf, baseball, football.