OUTERDO EVA Half Round Yoga Foam Roller Massage Floating Point Column Exercise Fitness Trigger Roller 45cm Made by EVA foam, Lightweight, very soft, rich elastic buffer,surface with massage floating Point. Waterproof, anti-slip, non-toxic, tasteless, odourless. Can eliminate muscle tension, and strengthen the core muscle strength and flexibility, stretching the muscles and tendons.Also can break up the soft tissue adhesions and scar tissue,Self-massage and myofascial release, break trigger points. Relieve tension fascia while increasing blood flow and circulation of the soft tissue. The skin moist and resilient , lipid-lowering toning.