Thanks to the ultra-slim profile, our Cool Coolers Ice Packs won't take up much space inside a lunchbox or sack, but will keep your food chilled until lunchtime. The compact size also helps to save space in your freezer.Non-toxicWe recommend hand washingThanks to the ultra-slim profile, our Cool Coolers Ice Packs won't take up much space inside a lunchbox or sack, but will keep your food chilled until lunchtime. The compact size also helps to save space in your freezer.