Montane Prism (2014)

Synthetic insulated jackets are ideal as year-round garments, and the Montane Prism is one of the best all-rounders out there. It uses PrimaLoft Eco synthetic insulation that includes 50 per cent recycled fibres. The shell is made from Pertex and when combined with the insulation you get a very lightweight option at just 423g (size L). That weight includes a hood with a wired peak and volume adjustment, which fits and moves with the head very well. There are two chest pockets that are ideal for warming hands or stashing maps while wearing a rucksack. The cuffs are only elasticated, though, so they can’t be adjusted as easily as those with Velcro tabs. The cut is quite close on the sleeves while the body is a more average fit. This allows the Montane Prism to work well under a waterproof or over a fleece mid layer. It isn’t as warm as the down jackets, so it isn’t ideal for the depths of winter, but it makes a superb additional layer that can be worn all day or stashed in a pack ready for use. All that for £100 is very good value too.

Outer Pertex Microlight ripstop
Insulation Primaloft Eco (polyester)
Weight 423g (size L)
Men’s sizes S-XL
Women’s sizes 8-16 



The Montane Prism was the best jacket for versatile synthetic performance in our test.

Review by Graham Thompson
First published in Trail magazine February 2014