Check the listing for details. Trigger Point Performance Original The Grid Foam Roller - Black. Color: Black, Condition: New other (see details). Listed at 34.95 USD. Trigger Point Performance Original The Grid Black Foam Roller - Black. 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. GRID’s patented design makes it the first foam roller to feature a multi-density exterior constructed over a hollow core. The surface pattern is ideal for rolling through tight muscles, knots, and kinks. The proven durability and superior effectiveness of the GRID has helped make it a trusted tool of physical therapists, massage therapists, athletic trainers and professional athletes. Using TriggerPoint GRID foam rollers provides benefits such as decreased muscle and joint pain, increased circulation and flexibility, improved range-of-motion, better balance, and improved gait. Shipped with USPS Priority Mail.