TRIGGERPOINT Performance Therapy Grid Patented Multi-Density Foam Massage RollerPatented foam roller design offers a superior, multi density exterior constructed over a rigid, hollow core Constructed from quality materials that won't 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 TriggerPoint Trusted foam roller of physical and massage therapists, coaches, trainers and athletes provides muscle recovery, pain relief and