The Aladdin Stainless Steel Vacuum Mug 350ml is perfect for hot or cold drinks on the go, a mug that perfectly blends both function and style. Features Leak-Lock™ technology; leak proof flip lid with locking slider. Complete with a Stainless Steel double wall Thermavac™ vacuum insulation, which will keep drinks hot up to 3 hours and cold up to an impressive 20 hours. Aladdin Stainless Steel Vacuum Mug is BPA free and suitable for use in the dishwasher for easy cleaning. 350ml capacity.