British company Montane designed the Prism for ‘rough and tough’ conditions, and the combination of a Primaloft Eco synthetic fill and a Pertex Microlight outer fabric make it ideal for use in the UK and Northern Europe or other similarly ‘damp’ locations. At £175 it may be painful on the wallet, but if you’re looking for comfort, durability and a good night’s sleep you can’t go wrong.
Aside from the excellent Primaloft fill and the light but durable, windproof and water-resistant Pertex fabric, there are a number of features that make this a superb sleeping bag. You get two internal pockets; non-slip tabs on the back of the bag to help keep you on your sleeping mat; a two-way, three-quarter-length YKK zip with glow-in-the-dark zip pulls; an ergonomic foot bed to help reduce cold spots in that area and a stuff sack that’s waterproof with taped seams.
Montane Prism Verdict
The only minor faults with the Prism are that it has a slightly large pack size, taking up quite a lot of room in our rucksack, and if you’re a larger person you might find it a little tight around the shoulders. But overall it’s highly recommended, with a durable, warm interior that should keep you nice and snug.