Contigo Westloop Autoseal Travel Mug 473ml Violet Using Austoseal technology, this vacuum sealed stainless steel travel mug is spill-proof and leak-proof and has a generous 473ml capacity, making it the perfect choice in the car, at the office or gym and whenever you want to enjoy a refreshing hot or cold drink. Finished in eye-catching Violet, this superior travel mug can be opened with one hand and closes itself automatically when you finish drinking. It has a textured silicone collar for a secure grip and unlike some bottles the lid is easy to clean.Made with double walls and vacuum sealed, this attractively contoured mug keeps hot drinks piping hot for up to 7 hours or cold drinks cold for 12 hours. The wide mouth allows for the addition of ice cubes and the twin walls mean there can never be any messy condensation on the outside. Save money and make the ethical choice when you choose to make disposable plastic water bottles a thing of the past and make the change sustainable living.