This Luminarc 29cl coffee mug is made from high-quality opal glass which is fully tempered and 3 times more resistant to breakage and chipping than standard soda-lime glass. The material is ultra-hygienic thanks to a non-porous surface that won’t absorb stains or odours, and the classic white design makes it a timeless addition for any home, office, or cafe. Pure white, smooth, and easy to clean, it is resistant to temperature changes and safe for use in both your microwave and dishwasher.