GLOW PARTY DECORATIONS - Balloons are the best party accessory for all ages, through selection and improvement, our fluorescent balloons can be brightened under UV light. making your birthday party more energetic and attractive. fluorescent balloons are also very suitable for decorating birthday arches and party arches decorations. | ENOUGH EXPANSION SIZE - The Neon balloon measures about 30 cm/ 12 inches in diameter after inflated, Each balloon with "Happy Birthday" printed, perfect with birthday decorations, which are green, yellow, pink, purple and orange respectively, the colors are bright, 50 pcs satisfy your decoration needs and make your kid's party full of fun. | MATERIAL - Fluorescent balloons are made of latex. there may be some smell due to production, but please rest assured that it will not affect your health and normal use. to save your time, we give an extra balloon inflation tube for free to fill the balloon. if you want the balloons to float in the air, you need to fill them with hydrogen. | LET THE PARTY FILL WITH BRIGHT AND COLORFUL BALLOONS! - Perfect for glow birthday party decorations, blacklight party decorations, fluorescent party, birthday party holiday carnival, valentine's day, graduation, anniversary, retirement, wedding, fetes, festival celebrations, Christmas, baby showers, school activities. | PLEASE NOTE - The neon balloons will do not glow without a UV Blacklight Reactive. the balloon is transparent. The happy birthday of the inflated balloon will shine more brightly in the UV night under the shining of black lights.