RANSENERS® 700ml Stainless Steel Vacuum Insulated Bottle Travel Mug/Flask, Wider Opening, BPA Free, Leakproof

A well designed 700ml flask though it does have a few things which you should bear in mind..It's marketed as a "non-slip base". Its not non-slip. It does have a recessed centre, though the sides of the base - the outer circle - are just a continuation of the whole flask exterior. There's no silicone base or otherwise.It's fantastic for loose leaf tea (my hot drink of choice in flasks). The lid does not function as a cup as the seal inside the lid comes all the way to the surface of the lid.The flask does have a smooth, rounded upper lip - its designed to be drunk directly from the flask. I much prefer this, as I drink on the go. Some may prefer to take a break and sip a cup (you would need to purchase one separately).I love this flask as its suits my perfectly in size and ability to strain my whole leaves with the removable and will fitted filter.As an added bonus, the set includes a neoprene sleeve. Not needed as my drink stays hot for the seven hours I hold it for.But a great addition to the flask nonetheless.4 stars

Fantastic flask - I use it for work daily and it keeps my coffee hot for about 8 hours minimum. A tip to keep your hot drinks hotter even longer is to fill the flask with very hot water about 5 minutes before you plan to put your drink of choice in there. That way when you tip out the water, you're not putting your hot beverage into a cold flask. :)

The media could not be loaded.  I'm very impressed with this. I made this up at 4am this morning with french press coffee. I had a cup mid morning out of it that was still piping hot. I had a few hot gulps early afternoon. This evening, fifteen hours after filling it up I had about half left. Inmeasured it with a temperature probe and it measured a pleasant 41.5°c. For me that's impressive. Realistically, I could make my coffee the night before and have it in the morning to save time.Not only is it great at keeping hot, it looks very smart and has clearly been made exceptionally well.Its completely leak proof. I can take it anywhere. Plonk it in my bag alongside my tablet and important documents, my book etcetera and know there wont be any accidents. See my attached video. It will only leak ever so slightly ifIt's a big size. More suitable for either soups as a main meal or coffee for a couple of people.It comes with a carry loop which is permanently attached. When you hand wash it it does dry rather quickly.The whole bottle is very simple and easy to clean.Overall it's the perfect travel bottle / mug.

This is a brilliant flask. I needed this for my wife to take to work and needed the flask to stay hot for 2.5 hours so she can have hot soup on her dinner break. I tested this out last night with the sleeve on. I put red hot water in at 6pm and checked it at 9pm guess what it was still red hot and that’s all I need. The quality of this is excellent and it looks great too.

Great value and good quality, easy to use and worth a try.

This is a really nice very expensive looking vacuum insulated flask which is a great upgrade to my current battered one. Tested it out today on a small hike and it hasn't leaked, retains heat perfectly and hasn't had any first day signs of chips or scratches despite having a good jiggle about in my backpack on the way back when it was empty and I slung it in the main compartment with everything else, so as with the overall feel the outer finish seems very good quality too. If you're more precious about your flasks or more looking to use this for commuting or work then it's a really nice looking very sleek and expensive looking flask, with the outer sleeve giving it a final flourish of class.

This is brilliant, I make a coffee at 7am and at 12pm it's still mouth burning hot.Let a coffee for 12hrs once it was very very warm but not really hot