Blue plastic ziplock bags with a thickness of 2 mil. Each bag measures 10 x 12 inches, making it suitable for various packaging and shipping needs. Use colored poly bags to color code by color and organize your items. Some ideas for which these Blue Reclosable Poly Bags can be used include, crafting, paperwork, artwork, games supplies, garage sorting, cords and many more items that need to be sorted. Great for your garage cleanup! The bags feature a resealable zipper seal for secure closure and easy access. Made from quality polyethylene plastic, these bags offer durability and protection for your items. The zipper opening of these bags have reinforced spot-welded pinches at the two ends, which add strong stress point support, but slightly narrow the bag opening. The length (12 in) is measured from the zip lock seal to the bottom of the bag and excludes the flap above the zip line.