Body-Bands 41" Loop Resistance Band Set 4 | This Training Band Set includes four Bands | These Exercise Bands are great for CrossFit, P90X, Strength and Flexibilty Exercises, and for Pull Up Assist ADVANCED RESISTANCE BAND SET has resistance levels ranging from 10 to 120 lbs RESISTANCE BAND TENSION RANGE is based on Band Width & Color. THESE LEVELS ARE AS FOLLOWS: " Red (10 - 35 lbs), " Black (30 - 50 lbs), 1 1/8" Purple (40 - 80 lbs), 1 " Green (50 - 120 lbs) FROM THERAPY TO CROSS TRAINING TO PULL UP ASSIST these bands offer a great variety of uses |The 1/2", and 3/4" Bands are ideal for Beginners, Stretching, and Rehabilitation | The 1 1/8" and 1 3/4" bands are ideal for advanced Resistance Training and Pull Up Assist THESE HIGH QUALITY VERSATILE TRAINING BANDS have a Lay Flat Length of 41-inches and are 3/16" Thick and are Made by Layering a Continuous Sheet of 100% Natural Rubber Latex WE STAND BEHIND YOU AND OUR PRODUCT | We're so confident, that we'll let you try our bands RISK FREE for 30 days, and if you don't like them, send them back for a 100% refund. We'll even do you one better, and Back them with a LIFETIME WARRANTY for Consumers and a One Year Warranty for Commercial Users