Body-Bands Pro Elite Resistance Band Training Set #1 (Set of 2 Bands) CrossFit Set 1 Includes the Red 1/2" & Black 3/4" Bands with Resistance ranging from 10 to 50 lbs. This a Great Set for Beginners to use for Strength Training, Resistance Training, Isometric Training, and P90X The Band has a 41" Lay Flat Length and has a 82" Circular Circumference Body Bands Basic Training Series are Layered Loop Bands which are Ideal for Individual Users from Beginners to Athletes This Band is Made by Layering a Continuous Sheet of Natural Rubber Latex which gives it Added Strength and Durability