The Thermos Stainless Steel Mug with Straw 1.1 L – White (OT-1100) is a large vacuum-insulated mug that keeps your drinks at a comfortable temperature for hours thanks to double-wall insulation and a leak-resistant lid with straw. It’s typically reported to keep cold drinks cold for up to about 12 hours. While exact manufacturer figures for hot drinks vary by source, similar Thermos insulated mugs of this type generally keep hot drinks warm for around 6 hours in real-world use, depending on initial drink temperature and how often the lid is opened.
6 Hours Hot 
12 Hours Cold
