Shipment contents: 1 large 40 cm balloon (deflated); 1 piece/package. High-quality material: improved aluminum foil material, thicker than regular letter balloons, not easy to break and not easy to burst. Bright colors add shine to your party. Details: there are holes at the top for easy organizing and hanging. Self-sealing, no balloon string required. Can be used repeatedly. Applicable gas: this balloon is suitable for inflating with helium or air. Scenes: very suitable for party decoration, such as weddings or birthdays, bachelor parties, baby showers, bridal parties, engagements, anniversaries, Christmas, banquets, etc.