Set of 4 Vibrant Butterfly Balloons: This pack includes four eye-catching 18-inch butterfly-shaped foil balloons, each designed in bright neon and UV-reactive colors that pop under blacklight, adding a fun glow effect to your party space. UV & Neon Reactive Colors: Perfect for glow parties, raves, or neon-themed events, these balloons light up brilliantly under UV light, creating a mesmerizing, luminous atmosphere that guests will love.Air-Filled & Easy to Use: Designed for convenient air inflation only, these balloons can be quickly filled using a straw or hand pump — no helium required — and can be hung, taped, or added to balloon garlands for versatile decorating.Durable Foil Construction: Made from high-quality foil material with secure self-sealing valves, these butterflies hold air well and maintain their vibrant look throughout your event, and can be deflated and reused for future parties.Perfect for Unique Themes: Whether it’s a kids’ glow birthday, UV dance party, festival, or garden soirée that transforms under blacklight, these fluorescent butterfly balloons bring an extra touch of magic and color to any celebration.