TriggerPoint CORE Foam Rollers offer a solid-core design and durable EVA foam construction to withstand years of repeated use. Unlike standard polypropylene foam rollers that are rock hard when new and can quickly break down and become soft, the CORE is made from EVA foam that has greater resilience after compression. The CORE’s consistency provides moderate pressure and delivers a premium massage with minimal discomfort. Its Grid pattern technology makes it the only solid foam roller on the market to channel blood and oxygen while you roll. The multi-density surface is designed to massage tight muscles, knots, and kinks to reduce soreness, improve flexibility, and increase recovery. The 36-inch TriggerPoint CORE supports the entire spine during yoga, Pilates, and recovery exercises and provides stability to roll large muscle areas, while the 18-inch CORE’s versatile size can be easily repositioned during exercise to support a variety of massages and routines. The CORE is part of a complete family of TriggerPoint foam rollers, including the TriggerPoint GRID and GRID X, which offer even more durability and firmer self-massage.