Pawliss Cute Rainbow Foil Mylar Balloon Party Decoration 35" Large Size 2 Pack Made of high quality aluminum foil. Not easy to pop. Blow up evenly and seal tightly when inflated. Length 36.6in, width 23.6in. Set of 2. Both girls and boys, kids and adults enjoy these rainbow themed birthday party decorations. Great for rainbow wishes party decorations, birthday party decor, unicorn party favor bags. Can be filled with helium at your local store or use a straw to fill up with air on your own. You can hang them from two holes on the top to keep rainbow balloons upright. We have a guarantee of 100% money back if you get the defective or damaged product.