Knightlink Foam Roller for Deep Tissue Massager, Patented 13"" High Density Exercise Roller for Muscle and Myofascial Trigger Point Release, Yoga, Back Roller for Fitness, Yoga (Purple) Body Relaxation: Muscle stretches and massages can be performed before and after fitness, exercise, and reduce stiffness; Relieve muscle soreness and tension, Penetrates deep into body muscles to quickly release myofascia, Improve muscle flexibility Good for Everybody: Ideal for runners, athletic athletes, yoga and Pilates students, swimmers to relax muscles and perform daily stretches after a workout, and to help reduce shoulders, arms, legs, back, buttocks, thighs, hamstrings, quads, calves lactic acid buildup after exercise High Density Material : Our foam rollers are made of PVC and EVA material and it's good cushioning elasticity so will not lose its shape after heavy use; They're light weight, pressure-resistant, waterproof, sweat-proof easy to clean, durable Lightweight Portable: Our foam roller set comes with a durable Portable nylon mesh bag so it's easy storage and transportation; It's very suitable for home, gym and outdoor sports so that you can stretch and relax wherever you need before or after exercise or yoga Partition Grid Design: 13 Inches X 5.1 Inch Diameter, Lightweight Massage Roller With triple grid massage zones, it mimics the finger, palm and thumb of hands; Protected by US Patent Nos: 9,345,921; 9,539,167 ; 9,656,112 ; 10,278,890 and 10,695,260 Buy with confidence. Check out our reviews. Also, happy to combine shipping to save you when you buy multiple items.