The 12oz Stainless Steel Travel Tumbler from Thermos is the perfect size for your morning wake up call. Compatible with most single serve brewing machines. Thermos™ vacuum insulation technology keeps coffee and tea hot up to 3 hours. Cold drinks stay icy cold for up to 10 hours. A slide lock lid helps prevent spills and leaks. Made with minimal parts that are dishwasher safe and easy to clean.