Gotobuy Yoga Foam Roller Beast Roller for Massage Workout and Fitness Pilates This 14.5cm diameter roller is made from high density EVA foam Waterproof, anti-slip, non-toxic, tasteless, odourless Perfect tool for yoga, pilates, fitness exercises physiotherapy and rehabilitation. Lightweight, soft to touch, rich elastic buffer, surface with massage floating point. It is great for a wide range of strengthen the core muscle strength and tendons