Body Part: Neck and shoulder, arm, upper back and chest, middle back, hips and glutes, upper leg, and lower leg; Condition: Achilles tendonitis, DOMS (Delayed Onset Soreness), forearm / bicep tendonitis, IT band syndrome, runner's knee, neck pain, piriformis syndrome, sciatica, and shin splints; 34% Ethylene Vinyl Acetate, 66% Acronytrile Butadiene Styrene; Ideal for traveling, this smaller version of our original GRID is built for on-the-go relief; Travel-friendly 10-inch length fits perfectly in most gym bags and luggage; Patented GRID pattern simulates a massage therapists hands, mirroring the pressure of fingertips, fingers, and palm; Durable foam surface delivers firm compression on tight muscles, knots, and kinks for a total-body massage; Patented hollow core design retains shape after frequent use; Easy-to-clean and sweat-resistant EVA foam surface; 10-inch foam roller is 4.4 inches in diameter; Size: 4.33-inch x 4.33-inch x 10-inch; Warranty: 1 Year