High quality material:The Party Balloons are made of safe aluminium foil.Non-toxic and No harm to kids. It's not just a birthday party decoration, it's a perfect toy for kids. The best rated kits and the perfect decor:1pcs 29.5*18.9inch Giant Sonic the Hedgehog character balloons, 2pcs 18 inch round Sonic the Hedgehog balloons and 2pcs blue laser star balloons.Perfect for Sonic the Hedgehog themed birthday party . An ideal gift for kids, great for Sonic the Hedgehog theme party, kids birthday party, Children's party,baby shower, young people or other festival party events.With this cute Sonic the Hedgehog Balloons Balloons Set to decorate your cute kid's party, it would create a big surprise and lots of fun.Enjoy the party, Blessings. Inflating Instructions - Fill with air or helium(NOT included),use a transparent balloon adhesive attached to the wall. And you can reuse it, you can inflate it over and over again.Please blow up the foil balloon slowly, inflate 80% full duo to it doesnt have elastic, too full will break.