Bullet Points: 1,Eco-friendly and Non-toxic: EPP material, eco-friendly, non-toxic, deep massage, strengthen the back muscles, and also beautify the back line. 2,Please Note: For the first time, U may feel a little hard, but try more than several time, U way get used to it and after the exercise, U will feel relax for the all body. 3,Two Uses: Two size of the roller which will fit more parts of the body. 4,Guide to Self Massage: Roll before and after your work out at the gym, Pilates, or yoga to condition and stretch muscle tissue. And also speed up recovery, treat muscle pain, increase performance, flexibility and mobility. 5,Muscles Recovery: Foam Roller Set for deep tissue massage and exercise, neck back leg arm feet muscles recovery. Specificati on:Name:EPPHollowYogaFoamRollersetMaterial:EPP Features:massageball,musclerelaxation,fitnessrelaxation Size(approx.):length30cm,Diameter15cm(largeyogacolumn) 15cmlength,3.5cmdiameter(smallyogacolumn) 16cmlong,8cmdiameter(peanutball) 8cmdiameter(yogaball) PackingList: 1*LargeYogaPillar 1*SmallYogaPillar 1*PeanutBall 1*YogaBall 1*StorageBag