12 INCH BY 2 INCH RESISTANCE LOOP BANDS. Most of the other exercise bands are 10 inches long. 12 inch bands means more options while still a good fit for most exercises and workouts! MADE OF ECO-FRIENDLY NATURAL LATEX RUBBER. Our premium quality resistance bands are tested in our exercise facilities for maximum strength and endurance in your workout. DUMBBELLS! Read the description below to find out why! NO RISK! GUARANTEED FOR LIFE. Full satisfaction or we will give you a complete refund, no questions asked! EXERCISE BOOKLET AND VIDEOS/RESOURCES are not included but instead are available online. Website is printed on the bands. 10 BLUE/MEDIUM BANDS - 0.5mm thick. 4.5-7.7kg resistance. 10-pack of blue bands are now available for our customers who have specific needs for many of the same level band!