Back rolling helps keep your upper back upright and lovely! Our new back roller is made with ABS core (hard yet light), molded PU foam (soft but not too slippery), molded-over edges (prevents the core slipping out), is one foot wide, and has a plain exterior. The Gokhale™ Roller is 13″ long and 6″ in diameter, and weighs 1.7 lbs (765 g).