This is a set of 4 easy-to-apply mirror wall stickers! They are super lightweight and made of unbreakable mirrors. Made of acrylic, the mirror surface has a special film processing, so it won't break even if dropped or bumped. The included strong double-sided tape allows you to stick them directly to the wall. They can be installed on glass walls, wooden walls, smooth walls, latex walls, and even doors! Because they are shatterproof mirrors, they can be used with peace of mind in homes with elderly people, children, and pets. They can also prevent secondary damage in the event of a disaster such as an earthquake. 【Endless Uses - How to Use Them】 Living room, entrance, hallway Bathroom, washroom Children's facilities, schools, nursing homes Sports gyms, yoga studios, dance studios, and more. 【Size】 20cm x 20cm