Non porous glass of Borosil Neo Borosilicate Glass Bottle does not absorb stains or odors This bottle is made of 100% borosilicate glass and is guaranteed to withstand temperatures of up to 350°C This bottle can be safely used in the microwave, oven, flame, fridge, freezer and dishwasher This bottle retains perfect clarity & does not turn cloudy with repeated usage The easy carry lid of the bottle makes it extremely portable