Modular 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 lunch chilled when you're on the go;Durable lunch box containers have a secure lid seal to prevent leaking;Kit Includes: 2 Snack Containers (.5 cup capacity), 1 Side Container (1.2 cup capacity), 1 Sandwich Container (2.6 cup capacity) and 1 Medium Blue Ice (Size: 4.81 L x 5.625 W x 5.25 H when stacked);Microwave, dishwasher and freezer safe, BPA-free