Body-Bands Pro Elite 3/4-Inch Wide Loop Resistance Band, Black (1-Pair) Pair of Black 3/4" Wide Layered Loop Resistance Bands providing 30 to 50 pounds of Resistance each This Set is Great for Stretching, Flexibility Training, Strength Training, 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.