Very good thermo mugs. I had the smaller the company Contigo but wanted more drinne content. Too bad that the company no mug with 0.75 or 1l offers but then extends the isolation I think no longer. If you empathize boiling water it is safe to drink after about 3 hours. The larger cup here has a better 'grip and smaller grouting. This, however, also the cup is up slightly slimmer.