The MiiR® Flow 16-oz Tumbler has a tapered design making it easy to hold, and it has a splash-proof lid with a slide-style sip opening to help prevent spills. Featuring a double-wall, vacuum-insulated design to keep beverages hot or cold longer, the stainless steel MiiR tumbler fits in most cup holders. The MiiR® Flow 16-oz Tumbler is fully backed by our Ironclad Guarantee and you can find it on Patagonia.com.