ULTRA THIN DESIGN - Butterfly shaped lunch box ice packs built for durability and ultimate cooling power. Reusable ice packs measure 5"x .5"x 4.5", and fit perfectly in kids lunch boxes for school. Ideal for keeping food and drinks colder for longer. FUN FOR KIDS & KIDS AT HEART - These colorful ice packs for lunch boxes are sure to brighten up your day! Each kids ice pack is slim enough to slide between items in a tight lunch bag, keeping contents cold for hours. The perfect bento box ice pack! POWERFUL COOLING - Ice packs for coolers freeze quickly and stay frozen all day. Perfect for school, work, picnics and more! For best results, stack multiple freezer packs at the top/sides of your insulated cooler or lunch bag to keep contents cold. SAFE & NON-TOXIC - Built with BPA-free and non-toxic materials, our slim ice packs are safe to pack with food and easy to clean. Simply rise with water. With a durable leak-proof design, these small ice packs are sure to survive the school year! DESIGNED BY MOMS, FOR MOMS - Cool Coolers brand is the most trusted reusable ice brand for its groundbreaking line of ice packs for lunch bags! Available in multiple sizes, colors, and shapes, these ice packs for school are kid tested, mom approved!