Our Christmas gift balloons contain nylon foil. This set of balloons, made of nylon foil, is puncture-resistant and maintains its perfect shape for extended periods after inflation. It's also leak-resistant and suitable for both indoor and outdoor use. The classic Christmas design adds a touch of festive cheer to your home or party. Easy to use: Place the beveled edge on the front, where you can see the shape. Fold and conceal the nozzle with tape to create a more beautiful balloon. Lay the balloon flat on the ground, open it, and locate the nozzle. Make sure to insert the air cylinder under the colored foil. Gently press the cylinder until it finds the seal, and inflation is complete. This ensures excellent air retention. The thick material also ensures a leak-proof, self-sealing design. It's durable and can be used as a decorative item.