• Foam
• Patented foam roller design offers a superior, multi-density exterior constructed over a rigid, hollow core
• Constructed from quality materials that wont break down or lose shape from repeated use
• Includes access to free online instructional video library on foam rolling best practices from the experts at trigger point
• Trusted foam roller of physical and massage therapists, coaches, trainers and athletes
• Original Grid: Standard density, 13 x 5.5 inches, 500 pound weight limit; 1 year manufacturer's warranty