Stewart Sealfresh is a British brand of plasticware kitchenwares and bakewares; in a variety of shapes and sizes for home and horeca needs. The measuring jugs have Imperial and Metric measures, and also dry and liquid measures. The ice cube trays are flexible and yet durable. No more worries getting the ice cubes out from the tray; just a simple flex will do. The funnels are durable and resistant to stains. With tappered tips, no more worries of spillage out of the mouth of small containers or bottles. Dishwasher Safe(110°C)/Microwave-oven Safe(110°C)/Freezer Safe(-40°C). Whitening agent is not use in the production for health reason and thus yellow tint might develop over time on the plastic.