EPP material column. Great to relax muscles, improved blood, and decrease the chance of injury and increase muscle recovery time. Very suitable to use as a stretching tool to promote a better posture by combating slouched, rounded shoulders and returning the head to a neutral position. Features -Color:Black -Material:EPP -Size:29.50X15.00X15.00cm/11.59X5.89X5.89in -Made of EPP material which is high-density and resists bending or breaking under tension or weight, providing a firm, deep tissue massage that can be utilized for long-term therapy. -The yoga roller delivers massage to relieve aches, pains, knots, and tension, provide you a good use feeling! -Can help after and before a workout for relaxing and better blood flow. -You can use this for your back, legs, and arms to reduce soreness. -Perfect for positioning, balance, and muscle re-education, body stabilization, body awareness, and coordination, ranging, and strengthening activities. Package list: 1 x Yoga Roller