Body-Bands Advanced Cross Training Pull Up Assistance Band Set (Set of 4 Bands) The Ideal Pull Up Band Starter Set for Most People | Resistance levels ranging from 40 to 150 lbs The Advanced Assist Pull Up Band Set Includes the Black 3/4", Purple 1 1/8", Green 1 3/4" and Blue 2 1/2" Loop Exercise Bands Our Consumer Grade Line of Bands are Generically Branded with no Logo to SAVE you money | These bands are ideal for for Individual Users for Strength and Resistance based Workouts. Made from Natural Rubber Latex and are over 99.998% free of soluble proteins (latex allergens) and the bands can stretch up to two and a half times their original length. Great for Strength and Flexibility Training, CrossFit, P90X, Cross Training and Pull Up Assistance