... meet ASTM and EN71 standard OEM welcomed inflatable double ski ring,inflatable snow tube,inflatable snow sledge Product featuresPVC ... is welcomeCompetitive AdvantagesWell and High Quality Control ,Prompt Delivery ,New Product ,Customer's Design and Logo are Welcome ,Competitive ... OEM AcceptedSafety/Quality ApprovalsEN-71 ,ASTM, 6P inflatable double ski ring,inflatable snow tube,inflatable snow sledge