These are compatible with the 2019 (purple) and 2020 (orange) California CAV Decal OR the New York Clean Pass Decal (not included!) - please see below:
Our precision-cut clings for the Clean Air/Pass Vehicle Decals are made from Xpel Stealth Paint Protection Film, and ship as a complete set of four (2 large, 2 small). You need these because removing the stickers from your car isn't (by design) easy, and leaves residue that's very difficult to remove. This complete set includes 2 large and 2 small decals. Each is a little larger all around than the actual decal, so it's virtually impossible for anyone to know it's there.
These have a light adhesive, so you can apply and remove these many times; if you plan on doing this, always ensure the paint is clean where you're applying them, and keep the plastic carrier sheet they arrive on for storage when they're not on the car.