Static Cling Decals are made of .007” clear static stock made for glass. They use no adhesive and still hold the decal firmly in place. They do not require split backing for easy removal. Static Cling Decals are available with front cling or back cling. Clear Static Clings are meant for indoor use. Permanent Clear Decals are made of a 4 mil clear vinyl with permanent adhesive back. The Permanent Clear Decals have outdoor durability, up to 4 years, with a clear, water-base adhesive and an 83 lb. Silicone-coated paper liner. Clear Decals are available with front or back adhesive. Clear Decals are meant for indoor/outdoor use. Permanent Decals are made of a 4 mil white vinyl with permanent adhesive back. The Permanent Decals have outdoor durability, up to 4 years, with a clear, water-based adhesive and an 83 lb. Silicone-coated paper liner. Permanent Decals are available with back adhesive only. Permanent Decals are meant for indoor/outdoor use.