DAS Leben Resistance Bands Set Fitness Tubes Training Strength Snap is refused !December New arrival AB roller tubes are made from 100% eco-friendly natural latex which Support repeated high strength stretching. Replacing previous EVA material in the market! SIZE - 41*15*5cm ALL-ROUND EXERCISE - Over 20 different workout postures with detailed guider, let you enjoy your training time. FUNCTION - Ab Roller with elastic bands for arm workout, strengthen your upper, middle, lower and oblique abdominal. Resistance workout at home, work on chest, back, arms, shoulders and abs in one motion. 10 MINUTES EVERYDAY! - On the physical weight loss principle,using the DAS Leben Double Wheel Tensioner is the best way to keep your perfect body, no need to be on a diet,get liposuction and take pills.