We’ve got an excellent prize from Hydro Flask up for grabs this week. It’s their limited edition Horizon 21 oz, a double-wall vacuum insulated bottle that you can use to keep liquids hot for up to 12 hours and ice cold for 24 hours.

**THIS COMPETITION IS NOW CLOSED**

All of us in the Outdoors Magic team have used Hydro Flasks at some point or other, and we can definitely vouch for their capabilities. We’ve had plenty of hot drinks on cold hill days thanks to them and they’ve served our gear testers well over this hot summer too. 

The 21 oz Hydro Flask can carry a decent amount of water – just over half a litre – but it also has a slim profile, so you can easily stash it inside your backpack and stay hydrated on the move – it’s the right size for most cup holders too.

There’s no need to worry about any liquids leaking out of this thing either. With Hydro Flask’s specially designed lid, you can carry your camera and the bottle in the same pouch, secure in the knowledge that it won’t end in disaster.

Then there’s the build quality. The Horizon is made from a pro-grade stainless steel that’s coated in a signature powder to make it durable and slip-free, so you can grab hold of your Hydro Flask with sweaty or wet hands.

Along with its eye-catching design, this special edition comes with a Flex Boot – basically a grippy silicone base that’ll provide protection to your flask and any surfaces you place it onto.