GoFit 13" Massage Roller with Ultra Fin Core - Blue Introducing the GoFit UltraFin Core, engineered to allow deeper pressure with greater stability for muscle massage and stretching. This unique inner support structure, along with our already-effective foam patterns, breaks down and releases the body’s ailments and stresses. Unlike other traditional “hollow” foam rollers, the UltraFin Core withstands the most intense sessions in the industry, helping your body to improve blood circulation throughout your skin, fascia, muscles, and even tendons and ligaments. UltraFin Core prevents flexing and breaking of the inner core. Holds up to 50% more weight than traditional “hollow” foam rollers. Firmer, denser rolling for faster breakdown of fascia and lactic acid. The same popular exterior patterns, allowing blood to quickly flood the muscle through the foam channels and speed up recovery. Product Measurement Approx mm (L x W x H): 330x165x165 mm Colour: Blue Includes: Extreme Go Roller Training Manual