This Pyrex Optimum Roaster sets a new benchmark for kitchen glassware and is made from tempered borosilicate glass. It is both oven and microwave safe and does not stain or retain flavours. It can withstand a maximum temperature of 300 degrees Celsius and a minimum temperature of -40 degrees Celsius. Pyrex glass is extremely versatile and is perfect for both cooking and serving. Every kitchen needs this roaster! It measures 31 x 20cm with plenty of space for baking a family-sized meal and the easy-grip handles make it ideal for everyday cooking. It's safe for use in your microwave, oven, dishwasher, and can even be kept in the freezer if you're saving leftovers. Pyrex glass is hygienic and will not absorb stains or odours and is thermal-shock resistant. It comes with a 10 Year Pyrex Guarantee.