MasterClass Stainless Steel Vacuum Flask, 500 ml (17.5 fl oz), Silver

Just right for keeping milk cold for our immobile mum to make her coffee with her pod machine.

Seems a good product. The stopper comes apart to make cleaning easier. I needed a new one as the bottom had fallen off the old one after 15 years. I have used it once and it seems to do the same job. it is, however, smaller and a little fatter than my old one. That is probably not a bad thing as the taller flask made the top of the bag hard to close. Delivery, however, was very,very slow.

Nothing to dislike - except having to try and work out american measurements much too often fromUK adverts. Thrilled to bits with this normal, ordinary, well made UK flask. Many thanks.

As Advertised

The first one purchased did not keep liquid hot at all. The replacement keeps liquid (tea) warm only for maximum of 4 hours. It definitely does not meet its marketing material and is a waste of money.

I was happy to a extent with this as it did keep my coffee hot all way through my shift at work but weather there's a fault with just nine but it had a slight leak when in my bag

being a 1 mug thermos flask and replacing a 1970s original thermos flask which I smashed the inner flask of from dropping. This has a steel fixed flask, so that won't be happening again.The design itself is nice and modern and there is a cup lid and inner stopper but with the description being so vague and generic for the range it omits that the stopper has an open/close mechanism and care instructions.The lid has a small open/close button that allows pouring without having to take the stopper out and would make pouring easier, although I decant into a travel mug so take it off and pour as I want the whole contents out in one rather than refilling the smaller screw top lid cup.Care instructions recommend handwashing the whole unit, but it says that the canister can be dishwashed but not the plastic stopper or plastic lined cup.That in itself isn't a problem as the canister is the only thing that is tricky to clean and the dishwasher takes care of that.Preheating is supposedly as little as 30 seconds of boiling water.There is no mention of how long it considers drinks to be able to be kept hot but I only use it for 1-2 hours maximum and it performs well for that.My use is for a refill of coffee at the end of reasonably short journeys rather than buying one when I get there and it pays for itself over just 3 shop bought cups.For me it is the right size to carry and not be a burden with enough volume for one cup and no more a short time after leaving home and is easy enough to keep clean. It should never smash and therefore delivers everything I want from it.

Do not keep drinks as warm as flasks with a conventional stopper.