The ChillMate 350ml S double-walled VACUUM cup is a great solid top quality cup for any activity. It's slim design and 350ml volume makes it the perfect cup for all ages and drinks. The ChillMate 350S cup has been design to keep your drink cold until the last drop due to its double wall vacuum system, no condensation on the outside like glasses and very comfortable to hold. The ideal cup for every family member for cold or hot drinks and small enough to fit in most bags. The Bamboo and stainless steel lid transforms this cup into a much more hygienic and personal cup for you to drink from it when you need a drink, keeping all the dust and bugs out, even keeping your drink colder longer.