Hello From Wisconsin Novelty Postcard Sticker Decals. rectangle shaped sticker decal. With over 30,000 unique designs, our stickers are water resistant and great for use on cars, windows, water bottles, laptops, hardhats, toolboxes and much more. Every sticker is printed on high quality 6 mil sticker paper, and are individually cut out. All designs are available as 3", 6", 9" and 12" stickers. Most orders ship out within 24-48 hours.