Tiger Tail - The Big One Foam Roller - Relieve Your Muscle Knots and Tightness - Sturdy and Powerful Muscle Massage Roller - Great for Sore Backs and Legs - Muscle Massage Therapy The Tiger Tail Big One is a sleek and powerful foam roller! The compact size (15" x 5") and light weight is perfect for convenient carrying and travel. This Tiger Tail foam roller is perfect for muscle massage; easily break up muscle knots and release tightness in various areas. Use the Big One foam roller to relieve sore backs, IT bands, glutes, quads, hamstrings, and calves. Foam rolling has been shown to help increase blood flow and range of motion. The Big One foam roller features a hefty foam construction, an easy-to-clean surface, and high quality materials built to last. The Big One and the entire Tiger Tail family of tools was created specifically to help you perform self-massage from head to toe.