PackIt Vertical Lunch Box, Blue Dots Integrated gel-lined walls chill contents for hours and mean you'll never waste money on separate gel packs again; no extra parts to lose or forget in the freezer Collapse lunch box and freeze overnight (12 hours); by morning, the walls of the bag will be completely frozen by morning and ready to cool items for hours Zippered opening allows easy access to contents Pack healthy and fresh foods- contents stay cool for hours Made from food-safe, nontoxic poly canvas; PVC-, BPA-, phthalate- and lead-free; easy to clean: interior wipes clean, spot clean exterior