Drinking opening inner edge is 25mm. Very good for travelling. Very satisfied 👍 We only use them for water, so cleaning is ok with this opening. Less suitable for indoor sports, as it cannot be ruled out that individual drops could fall onto the hall floor when drinking, which could lead to slippery spots.

The width of the drinking opening of the SIGG drinking bottle is not explicitly stated. However, the bottle is not dishwasher-safe and should only be cleaned by hand.

Yes I have made tea and put in a Sigg. Stays hot for a few hours, unless you also get a Sigg insulation item.