JOGOTO 13" Professional Grade, High-Density Foam Roller - Unique 2 in 1 Trigger Point Design - Deep Tissue Massages, Soothes, Refreshes and Invigorates (Black) Durable design won't break down with repeated use Employs Matrix technology and Distrodensity Zones Helps maintain flexibility; complements recovery process with improved blood and oxygen flow Foam roller dimension: 13"x5.5"