MOD 3-in-1 System: Customize your lunch box each time. The top lunch box has an insulated lining for non-perishables and the bottom lunch box has built in freezable gel to keep items cool. Designed to be used together or separately. EASY TO USE: Each lunch box is designed with a top handle. The removable strap can be used with each lunch box separately, or combined. Measures 6.5"L x 8.75"W x 9.75"H while open and 6.5"L x 8.75"W x 4.5"H collapsed. PATENTED ECOFREEZE TECHNOLOGY: The bottom lunch box is built with ECOFREEZE Technology: collapse, freeze overnight, pack your perishables, and enjoy! Zip together with the insulated lunch box for the perfect meal experience. NONTOXIC: Like all PackIt products, the MOD 3-in-1 Lunch Box is made from nontoxic gel and liner built into the walls. Made PVC free, BPA free, phthalate, and lead free. REDUCE WASTE: Eliminate the need for separate ice packs or gel packs with our freezable, reusable lunch box. Reduce food waste by keeping your food fresh for hours. Designed for ultimate flexibility.