SuperiorStretch SUPERIORBAND - Ballet Stretch Band for Dance & Gymnastics Training Developed for the Stretch Training that is required in Ballet, Contemporary Dance, Cheer, Gymnastics and other Performance Sports. Also used in Physical Therapy to Increase Flexibility and Range of Motion. SuperiorBand is made of Dry Natural Rubber (DNR) not Natural Rubber Latex (NRL). SuperiorBand is made with Micro-Ridge Technology and a Sure-Grip surface texture for a non-slip secure grip for both the feet and hands. Provides Firm Resistance for Maximum Benefit. Long at 45 Inches Flat = 90 Inches in Circumference. It is a full 1-1/2 inches wide so that it will not dig into your hands, feet, legs and back like more narrow bands. Also included with each SuperiorBand is access to instructional videos.