Simple care: the interior wipes clean, spot clean exterior. To use, simply flatten the lunch box and place it in the freezer overnight. REDUCE WASTE: The entire bag freezes! The design totally eliminates the need for separate ice packs or gel packs! Reduce food waste by keeping your food fresh for hours. Eliminate the need for separate ice packs or gel packs with our freezable, reusable lunch sacks. Patented EcoFreeze Technology, with built-in ice packs, creates a fridge-like cooling system that keeps your food and drinks cool for hours. Made PVC free, BPA free, phthalate, and lead free. PackIt Freezable Classic Lunch Box, Unicorn Sky Pink PackIt PackIt Freezable Lunch Bag, Black, Built with EcoFreeze Technology... Telescoping Magnetic Sweeper Pickup Tool - 35LB Pull Capacity PackIt Freezable Lunch Bag, Gray Stripes, Built With Pack It The secret is PackIt's groundbreaking technology: a freezable non-toxic gel liner is integrated into the walls of the lunch sack. With fully frozen walls, this lunchbox keeps food cooler longer, which means you can pack healthier foods. SIMPLE AND EASY TO USE: Just Freeze, Pack, and Go! Not machine or dishwasher safe. Care: wipe thoroughly or hand wash the interior and spot clean exterior; allow bag to dry completely before freezing. Keeps food cooler longer, allowing you to pack healthier foods that would spoil in other lunch boxes.