Pro-Tec Athletics The Y Roller Contoured Foam Roller Made from Elastomer-a high density, durable foam, 6" Diameter x 15 1/2" Length Excellent tool to promote flexibility and myofascial release Deep tissue massage: Reduces muscle fatigue and tightness, promotes flexibility and enhances performance Dual or single ridge options offer a targeted aggressive massage or less aggressive, moderate massage, scott jurek, Ultra Marathon Champion By far the most effective Foam Roller I have ever used - Scott Jurek, Ultra Marathon Champion