GoFit Extreme Massage Go Roller - Massage Bar and Training Manual The GoFit Extreme 13 Inch Go Roller, featuring the new UltraFin Core, exclusive egg crate pattern, and super firm foam is a condensed size, ideal for both pre and post workouts! DENSITY - The GoFit Extreme 13 Inch Go Roller holds up to 50% more weight than traditional hollow foam rollers and the UltraFin Core prevents flexing and breaking of the inner core. RELIEF - The exclusive egg crate design on the GoFit Extreme 13 Inch Go Roller provides deep tissue massage, pulverizing trigger point areas for maximum relief. GREAT FOR - The GoFit Extreme 13 Inch Go Roller is great for helping your body to improve blood circulation throughout your skin, fasica, muscles, and even tendons and ligaments! MANUAL - In the included Training Manual, youll find effective exercises for all types of deep tissue muscle recovery and unique strength-training moves you just cant do using standard rollers.