"This product has been designed as a tool for great post or pre-workout routines due to its muscle conditioning properties. Smooth textured surface is great for stretching while gentle rolling relieves stress and tightness for quick muscle relief. Roll away your stiff muscles. This foam rollers gently knead your tight muscles breaking knots keeping it supple and relaxed. Ideally sized for easy storage or carry along. It provides textured ridges to continuously knead and gently stretch soft tissueRelieves stress and muscle tightness, increases core flexibility, and improves spinal alignmentIdeal for stretching and balance training"• Medium density foam roller• Effectively relives sore muscles• Excellent tool for conditioning and after workout stretches• Compact and portable 4.5in. x12in.