Made of high quality 2.5mm thick, tinted black borosilicate glass,this handheld piece comes with a custom designed silicone sleeve that protects your piece from breaking and your bag from ash while youre out in the world. It features an ash-catching indent for clean hits as well as a flat base and roll stops so it can sit upright or lay flat on its side while you pack a bowl. The silicone sleeve uses a steel keychain that can be attached to your bag or belt loop.