Specification:Boot: hard Insert: breathable membrane, EVA material, 8mm high-density foam Clasp: two-section buckle, Velcro strap, lacing Ice skate frame: high-quality stainless steel Roller skate frame: aluminum LED wheels: PU 64mm/82A (S) PU 70mm/82A (M) PU 76mm/82A (L) Bearings: ABEC 7 Size adjustment button Inner shoe length: 190-215 mmRemarks: Not for commercial use 24 months warranty Importer: Abisal Ltd. | Poland | 41-807 Zabrze | Pyskowicka Street 17 | e-mail: abisal@abisal.pl Abisal Ltd.. declares that the products sold by the company are safe and meet the requirements contained in the Act on General Product Safety of December 12, 2003. (Journal of Laws of December 31, 2003)