Crown Sporting Goods 36" x 6" Premium EVA Foam Roller &ndash; Firm, Dense, and Shape-Restoring Move better, feel better. Roll out tight muscles and Knots, ease joint pressure, encourage better circulation and flexibility Like resistance bands and exercise balls, foam rollers began as simple physical therapy tools, but once knowledge (and proof!) of their effectiveness became widespread, their Use in gyms and at home has risen significantly Foam rollers reduce the risk of injuries and decrease recovery times. After exercise, foam rollers mimic a deep tissue massage. Balancing on a roller is a great way to add an extra dimension to simple exercises like push-ups and crunches EVA foam vs. Epp and EPE - EVA foam is superior to both epp and EPE foams in terms of durability, longevity, compressive strength and recovery. EVA foam protects your investment by maintaining and restoring its shape and performing better, longer Standard 36" foam rollers give you the freedom to perform the full range of foam roller exercises, perfect for lying the roller lengthwise along your spine. For rollers that are easier to travel with and store, consider 18" and 12" lengths