Package Includes: You will receive a set of "HAPPY BIRTHDAY" script letter balloon banners,a roll of 32ft ribbon and an 8cm/3.1 inch straw. Each letter measures 16 inches in size and is abundant in quantity, providing an unforgettable birthday party atmosphere High Quality Material: These happy birthday balloons are made of high-quality aluminum foil material, which is sturdy, durable, safe and environmentally friendly, not easily damaged or leaked, easy to hang and carry, can last for a long time, and can also be reused Perfect Birthday Party Decoration: These letter foil balloons feature a self sealing design for easy inflation, making them the perfect decoration for birthday parties. The balloons are beautifully printed on the surface, and the shiny aluminum foil material makes them more eye-catching at the party, becoming the center of attention for everyone and leaving behind an exciting and cheerful party memory Easy to Use: These birthday balloons only need to be inflated with a straw or air pump. After filling about 90% of the gas, simply press the filling port, and it will automatically seal without leakage. Easy to use, make your birthday party more exciting Wide Application: These birthday balloons are perfect for decorating birthday parties, and can be used as decorations on walls, ceilings, tables, and doors to experience a fun and joyful birthday party. They can also be used as exquisite gifts to give to family and friends who have celebrated birthdays. Make any birthday celebration truly special with these stunning script foil mylar balloons that spell out 'Happy Birthday' in elegant cursive lettering. Perfect for both kids and adults, these eye-catching metallic letter balloons create an impressive backdrop for birthday photos and party decorations. The sophisticated design adds a touch of glamour to any party space, whether it's a home celebration, restaurant gathering, or event venue. These durable mylar balloons maintain their shape throughout your celebration and can be easily arranged to create the perfect birthday message. Transform your birthday party into an unforgettable event with this classic yet contemporary balloon decoration that's sure to delight guests of all ages.