8-Pack Clear Heavy Duty Vinyl Storage Bags with Zipper - 12"x15"x5" (3.9 Gallon) for Closet Organization, Sweaters, Bed Sheets, Toys & Craft Supplies - Space Saving Solution for Home, Dorm & Travel

Used some of these to makes emergency kits for family members. They are small, but a twin size blanket /large throw. They also have a window on the inside of the bag s(fzor labels) but an emergency mylar blanket fits in here nicely. They really are 12x15x5 , have a handle, appear sturdy, and fit nicely behind the drivers seat or take up little room in the trunk. I also included a hat , gloves, window defroster, a ice scraper , snacks , and bottled water in another one of these that will also fit behind the car seat and these items can be changed out seasonally. The zipper appears to work well. They are also a great size foe sheet sets and stack nicely.