Package contents 1 large 40 cm balloon (defined) 1 piece/pack Premium material upgraded aluminum foil material thicker than normal balloons not easy to burst and leak easy to inflate and not explode bright colors give shine to your party Details At the top there are holes for easy organizing and hanging automatic sealing no balloon string required can be used repeatedly Applicable gas this foil balloon is suitable for inflating with helium or air Usage scenes very suitable for party decoration such as weddings or birthdays bachelor parties baby showers beer parties engagements anniversaries Christmas banquets etc.