Reusable glass drinkings straws are a safe, environmentally friendly and elegant alternative to single use plastic straws. Enviro Glass Straws are handmade in Canada out of thick borosilicate glass which is a very strong commercial grade glass that is heat and cold resistant. The straws can be rinsed under the tap with hot water or washed in the dishwasher. We recommend having a straw brush for thorough cleaning.