... : anti-knock of abrasion 4.massage balance disc massage balande disc , pvc balance disc , balance board , twist board ,seat cushion ,massage matmaterial: phthalate ... /G.W: 8/9kgspacking: PE bag, then 8 pcs in one brown cardboard (inflatory )logo, colours will be depends ... provide "CE" and 'ROHS" certificationit is used to exercise balance and massage , especiallly suit for yoga exercieserusage: seat or ...