Two in One High Density Foam Roller Set, Back Roller for Deep Tissue Massage and Exercise, Muscle Roller for Back, Yoga… $13.90 – $23.99 Make sure this fits by entering your model number. Design:100% EPP material which is Eco-friendly, Non-toxic and More deep massage with the honeycomb pattern on surface, Strengthen the back muscles, and also beautify the back line. Two Uses: Two size of the roller which will fit more parts of the body.