This is a portable stainless steel ashtray. This soot tray is not brittle and does not rust. It's a windproof ashtray, and when you're using this cool ashtray outdoors or in the yard, don't worry about the soot being blown away and causing a mess. The three-groove design makes your smoke more comfortable and safer. Suitable for indoor or outdoor places, such as home, office, bar, cafe, hotel, restaurant, party, buffet, etc.