321 STRONG Medium Density Massaging Foam Roller for Myofascial Self Release and Deep Tissue Massage - AquaCategory: Seamless RollerMeasuring just 12.75 inches x 5.25 inches in diameter, the 321 STRONG massaging foam roller is lightweight yet rugged. It's a solid core EVA massage roller with triple grid 3D massage zones that mimic the fingers, palms, and thumbs of a massage therapist's hands. Travel friendly at just 1 lb, our medium density muscle roller is comfortable to use - making it approachable for beginners , but still effective at penetrating the soft tissue layer of tired muscles . Soft enough to use while in pain from lower back injury , sciatica or plantar fasciitis, it's one of the best recovery tools to treat muscle pain, and to increase performance and flexibility. Rolling before and after exercise is part of a great stretching routine . Increase blood flow to massage site, flushing away stored lactic acid . Stretch overworked and strained muscles of the leg, arms, and feet by rolling during your warm ups and cool downs. Provides instant benefit to the hamstring, IT band, glutes, and calves by delivering superior massages at home or in the gym. Loved by runners, Crossfit athletes, yoga and Pilates students, swimmers, physical or sports therapy patients, and those just doing a normal fitness workout. Great for the arch of the foot, and any part of the body but the spine or neck. Protected by US Patents 9,345,921 and 9,656,112.