Colorful modular lunch box containers snap together to save space and stay organized, and can be stacked to fit various lunch bag shapes and sizes;Blue Ice freezer packs snap directly to food containers, keeping your child's lunch chilled when they're at school, on trips or more;Durable containers have a secure lid seal to prevent leaking;Kit Includes: 1 Sandwich Container (2.6 cup capacity), 2 Side Containers (1.2 cup capacity) and 1 Medium Blue Ice freezer pack (Size: 4.8 L x 5.6 W x 5.3 H when stacked);Microwave, dishwasher and freezer safe, BPA-free