3D Giant Unicorn Foil Balloons: The size is about 37"x17"x20.5". Contains 1 pcs. Sturdy Safe Mylar Material:Our unicorn birthday decorations are constructed from non-toxic polyester film material,featuring rainbow and cute clouds. The vibrant rainbow colored mane of unicorn itself makes these fabulous unicorn birthday decorations. No Need For Helium: The unicorn balloon can self-stand with air. Using the straw to blow on the balloon,pinch the vent flat after inflation, they will seal .This easy-to -fill design is simpler and more convenient than traditional helium balloons. Suitable For Every Occasion: Three-dimensional unicorn foil balloons create outstanding decorations for a wide range of parties , holidays festivals and events such as birthday wedding party decorations,animal themed party ,Anniversary Engagement Bachelorette party Mother's day, Father's day,baby shower, bridal shower, Thanksgiving day decorations, Independence Day,Christmas decorations, Halloween, etc,to make your party a big hit and awesome.