This is a 4-inch glass bowl made by Grav Labs. It's made from really good glass used in laboratories. It's made to make smoking taste good and clean. It's easy to hold and has just the right amount of air and filters the smoke. It's 4 inches long, which is comfortable for smoking every day.
It has a special texture on it because they use a technique where they blast it with sand. This makes it easier to hold.
There's a special part at the top that catches the ash when you smoke, and people who smoke a lot really like it.