The listings specify the decals are made from PET (polyethylene terephthalate). The material is described as waterproof, flexible, and suitable for reflective applications.
These high-visibility stickers are designed to improve visibility at night and in low-light conditions, and they can help make objects more noticeable in poor weather such as rain or fog.
Listings show these reflective decals used on trailers and trucks as well as many other applications, including homes, stairs, road markings, mailboxes, motorcycles, bicycles, clothing, warehouses, and railings, and for people who need to be seen at night (runners, pedestrians, cyclists).
They are self-adhesive and suitable for both regular and irregular shapes; listings cite use on homes, stairs, road markings, trailers, mailboxes, motorcycles, bicycles, clothing, warehouses, and railings.
Made of PET, the stickers are described as waterproof, flexible, and strongly adhesive; listings note they are not easy to fall off.