balloon castle PVC material 0.55MM thickness, EN-71 and ASTM standard, Air blower is CE/UL approved, OEM service. Balloon castle:1.) Material: PVC Vinyl 0.55MM(18OZ) which is water proof and fire retardant function, phthalate free, meets EN-71 and ASTM standard,2.) Usage: Park, backyard, party, rental or other commercial usage,3.) Air blowers are CE/UL approved,4.) OEM service according custom ...