Body-Bands Pro Elite Double Resistance Band Set #5 (Set of 10 Bands) Pro Elite Double Band Set 5 Includes Two Red 1/2", Two Black 3/4", Two Purple 1 1/8", Two Green 1 3/4", and Two Blue 2 1/2" Bands with resistance levels ranging from 10 to 120 lbs. each This a Great Set for Intermediates to Advanced to use for Strength Training, Resistance Training, Isometric Training, P90X, and Pull Up Assistance Each Band has a 41" Lay Flat Length and has a 82" Circular Circumference The Pro Elite Series is Body Band's Premium Line of Layered Loop Bands which are Great for Gyms, Trainers, Fitness Professionals, Athletes, & Hardcore Workouts Each Band is Made by Layering a Continuous Sheet of Natural Rubber Latex which gives the Band Added Strength and Durability. Pro Elite have more layers than the Basic Series, but the same thickness.