Monster Fitness Premium Hollow Foam Roller, Extra Durable & High Quality. Best Deep Massage Roller. Releases Muscle Pain & Stiffness. Best Use For Runners & Athletes. To Inhibit Overactive Muscles. Used At Home & Gym Classes. Specially designed to massage and sooth muscle tissue 13" long by 5.5" in diameter. Perfect for travel Enhance balance, stability, flexibility, and strength #1 YEAR WARRANTY