Roller SMJ for massage YG021-B 13x33 cm green Roller SMJ will relieve tension of your muscles after hard training. The SMJ roller for massage was produced from durable EVA foam. Different texture with separated zones of small protrusions. Easy and convenient transport enables low weight and compact size.  Data technical:· diameter: 13 cm· length: 33 cm· material: foam EVA, tube: PVC