How to Inflate Mylar (Foil) Self-Sealing Balloons 1. Locate the Inflation Valve Find the flat valve located on the “tail” of the balloon. 2. Attach to Pump or Helium Tank Gently slide the valve onto the nozzle of your air pump or helium tank until it fits securely.No pump at home? You can also use a straw for manual inflation. 3. Start Inflating Hold the valve firmly and slowly inflate the balloon with air or helium.Inflate gently—do not overfill—to prevent the balloon from bursting. 4. Self-Sealing Feature Mylar balloons seal automatically.After inflating, remove the nozzle and press the valve flat a few times to ensure it is fully sealed. 5. Decoration Options With helium: Tie the balloon to a weight to keep it from floating away. With air: Attach the balloon to walls, backdrops, balloon garlands, arches, or other décor structures. How to Make Balloons Float Helium Required: Latex balloons (and foil balloons) must be inflated with helium in order to float.Air-filled balloons will not float. Attention: helium-filled balloon generally floats for approximately 5 hours in normal indoor temperature conditions. Float time may vary depending on humidity, temperature, and handling. Package Includes 18? Metallic Red Heart Foil Balloon × 4 18? Metallic Pink Heart Foil Balloon × 4 18? Metallic Rose Gold Heart Foil Balloon × 4 18? Metallic Red Bow Foil Balloon × 4 18? Metallic Pink XO Foil Balloon × 8 18? Metallic Rose Gold XOXO Foil Balloon × 7 1 x 100pcs balloon stickers 1 x ribbon