Biologic Vacuum Flask

Biologic is Dahon's component and accessory arm, and they're currently busy growing their range of commuter friendly offerings. This Vacuum flask is designed to sit in a bottle cage and be operable with one hand, so you can enjoy your coffee on the way to work.

The flask is a two-part affair with a stainless double-skinned vacuum container topped with a plastic lid with a sip spout. Sorry, SipSpout™. Opening and closing the spout is achieved by pressing the big clicky button on the lid. Fill it up with piping hot coffee and the flask performs about as well as you'd expect a stainless flask to; you'll get a good few hours of grace before everything gets a bit tepid. It's a snug fit in most bottle cages we tried, though its weight when full means it's a bit unruly in the lighter Carbon offerings.

All in all it does everything it's asked to without fuss. The only minor niggle is that the spout is a bit of a faff to clean and won't allow you to enjoy your chunky vegetable soup unless you stop and unscrew the lid. But as a way of transporting hot (or cold) beverages by bike it's a tidy solution. Good for commuting, also good for those freezing winter training rides where you *really* need a coffee an hour in...

Verdict

If you want to take a hot drink on your bike, this flask will do the job just fine.