sorry i have to give you shit haha but its not glass and hell save the smoking for when you get home, dont do that shit in public. and if your really gonna do it in public roll something up! and if your like me who blows at rolling buy rollers that will do it for you, i have 3 (1.25, blunt, king size) and they work great. you can even find rollin papers that look like cigarette papers with a faking looking filter on them and all. dont afraid to get creative.