Contigo SnapSeal Byron Vacuum-Insulated Stainless Steel Travel Mug, 16 oz, Gunmetal

I filled this cup with hot water as a test. One first notices that compared to other travel mugs - this retains the heat inside the cup and the outside does not feel hot at all which is a good sign. 5 hours later I went back and the water was still hot not steaming and piping hot as when it went in but definitely as hot as I would like my coffee to be and after 5 hours it will more than do the job as I just need my coffee to stay hot from 7.55am until around 10.30-11.00am. Also I can confirm that when you tip it upside down it does not leak. The instructions are a useful read, they recommend to let the liquid stand in the mug for about 2-3 minutes before screwing the lid on and they also recommend having the sip hole open while doing this. I must say I am very impressed. If I feel there is more to be said after a few weeks of using this, I will update this review. But I'm impressed!

The best travel mug I've ever bought, so good in fact this is a second mug, bought my hubby one and he's impressed with how long it keeps warm and he travels with ti every day, no mishaps, leaking, comfortable to hold and to drink from a good seal.

Love Contigos - I carry mine everywhere, have done for nearly 6 years now! Bought this one for my sister-in-law who recently had a baby. Allows you to safely sip a hot drink whilst breastfeeding. And brilliant when baby starts to crawl as it's safe to have a cup of tea around them. Oh, she also uses it on the school run with her older kids! Finally, mums get to finish a cup of tea whilst still hot, even if that takes 2 hours! Saving money and helping the planet. No single-use cups needed. Hurrah!

Always been a fan of Contigo travel mugs and thought I'd try the snap seal as its a bit cheaper than the auto-seal. It works very well and keeps drinks at a good temperature, but on a couple of occasions the o-ring that seals in the liquid has come slightly loose when cleaning and if you don't spot this and reseat it, the mug will leak.

The best flask i’ve ever had, keeps the dronk ho for do long you have to undo the lid to cool it down

My husband has had this exact cup for 18 months (bought from Tesco) with no problems - best travel cup he's ever had he says. Just bought another as a replacement as his previous one is battered and bruised. Bought from SUPERMARKET USA through Amazon and it is not fit for purpose. The inner rubber band seal keeps coming loose from the lid (handwashed) and seems to have stretched after less than five weeks of use so will no longer stay put and cannot be drunk from without spilling down your shirt. SUPERMARKET USA are not interested and have closed my return request because we're 'outside of the return period'. FIVE WEEKS. If you're happy to pay the best part of £15 for a cup that lasts a few weeks then go ahead and purchase (you might get lucky and get a good one but I'm not the only reviewer to complain about the seal) because if it fails more than a few weeks after receiving it you won't be able to return it. SUPERMARKET USA, your customer service is appalling. FYI, if you're near a larger Tesco, they sell these 16oz cups for £12 and you don't have to wait four weeks for it to be delivered.

Sturdy, jeeps drinks cold or hot for a long time, so that is good functionality, however, the opening in the kid where you drink from is very poorly designed. The area around the opening is far to wide and unless you almost fit the whole lid in your mouth, it constantly spills. Very annoying. Really bad design.

Leak proof, easy to clean, no spillages. Drinks kept at temperatures listed.