Dream Muscle Foam Roller Deep Tissue Physical Therapy Massage Roller Best Choice for Yoga Exercise and Body Building ULTRA DURABLE AND HARDWEARING - Rigid EVA + PVC core of Outer foam roller's supports the most intensive and keeps its shape for a long time. 13 inch of Length and 5.5 inch of Diameter. MUlTI-FUNTION- Help relieve stress and muscle tightness, strengthen your core abdominals and flexibility,stretch the muscles and tendons,lose weight and muscles building.Also can break soft tissue adhesions and scar tissue,Benifit of self massage, myofacial release,and relaxing. STRENTHEN PHYSICAL FUNCTION- Increase blood flow in the whole body,better motion and increse the range of motion and decreases the chance of injury and recovery time after workout.Increase the blood circulation,can relax your muscles BETTER thoroughly. BEST CHOICE-Foam roller is WATER-PROOF,ANTI-SLIP,NON-TOXIC,TASTELESS AND ODOURLESSwater-proof, anti-slip, non-toxic, harmless odourless density 100% MONEY BACK GUARANTEE- If there is an issue with our product for any reason we will REFUND AND SEND YOU A NEW ONE.