Made from toughened glass that's robust enough to withstand high oven temperatures, the Pyrex Optimum Rectangular 4-litre Roaster is perfect for any kitchen and any culinary task. The roaster is durable and heat resistant, and suitable for cooking at oven temperatures up to 300°C. Easy-grip handles make it safe to transport hot food from the oven to table. With a ten-year guarantee, the Rectangular 4-litre Roaster has been built to last.