XL Large Ice Packs for Coolers - Slim Freezer Packs for Camping- Long Lasting Reusable Dry Ice Blocks, 13 x 10 x 0.5 inch, Quick Freeze - Set of 4Space Saving Large and slim design, maximizing space while ensuring cooling. Fits most of the coolers or cooler bags like YETI, Rtic, and Coleman. (Minimum size starts from 13x11) Long lasting cooling The freezing time depends on the exact conditions of use, but it would last longer than ice of equal weight. Freeze all stuff before loading and keeping the cooler sealed will extend its use. 25 minutes to freeze You dont need to make tons of ice before