TriggerPoint GRID® Foam Roller, 13" - Hard, Hollow Core Foam Roller - Muscle Massage,

TriggerPoint GRID foam rollers feature a patented design that offers a multi-density exterior over a rigid, hollow core for superior effectiveness and durability. The GRID’s sturdy construction withstands repeated use while maintaining shape and integrity. The GRID has a distinctive, multi-dimensional surface to improve flexibility, balance and mobility.