An effective mid layer will make all the difference in winter conditions but in order to maximise performance, the layer needs to balance warmth and weight. Our selection of mid layers utilise the latest in synthetic fabric technology to best meet these competing needs.

The fabrics and designs you will find in this guide to winter mid layers are based on years of operating in hostile conditions within UK Special Forces bolstered by leading expertise from the worlds of textile and product design. It is this synthesis of expertise, where real world practice meets scientific precision, that creates some of the most flexible winter mid layers you will find.

Phalanx Fleece


A lightweight, technical fleece optimised for layering beneath a hard-shell outer such as the Raid or Zodiac Jacket. Polartec HighLoft fleece fabric keeps insulation close to the body’s core without overheating in what can still be a mild time of year.

Weighing just 575g, the Phalanx Fleece maximises performance at minimal carry weight. This means it will fit easily into your expedition packing when rolled up into its own hood, giving you a dependable mission staple that you won’t notice – until you put it on.



A synthetic, modern re-design of the traditional sherpa fleece. Combining the benefits of synthetic fleece fabric, with improved weight to warmth ratio and anti-pilling technology, the Mantra Fleece is your ideal companion as the nights draw in this Autumn.

Light enough to be worn as a mid-layer under a hard-shell outer but windproof enough to be worn on its own as an outer itself. As with any mantra, this fleece will be with you everywhere you go as the temperature begins to plummet.

"Flexibility means having a fundamental ability to relate to any new environment and excel in it. Instead of fighting it, you greet it with open arms and observe it; instead of criticising it, you caress it and understand it; instead of ignoring it, you make it yours and be one with it."

- The Art of War

Prepare to Engage

Engage Jacket

The all-round, synthetic down jacket that will see you through Autumn and well into Winter. Featuring a rip-stop and water-resistant Pertex shell encasing leading Primaloft synthetic down fill. The Engage is a durable go-to that is light enough to pack into any expedition loadout.

The Jacket works well as a mid-layer under a waterproof hard shell such as the Raid Jacket but is also fully capable as an outer layer on its own, with its storm-peaked hood offering total protection from the elements.



A functional take on the traditional waterproof jacket, designed with climbing and scrambling in mind. Similar in design to the Echelon Jacket, the Zodiac swaps out the rip- stop / Dyneema upper for an uncompromising Schoeller, 3-layer waterproof fabric.

This hooded upper is both waterproof and abrasion resistant making it ideal for climbing to and abseiling from height or simply wearing as a mid-seasonal layer when conditions can change at any moment. Autumn weather can throw anything at you – make sure you’re ready when it does.



An all-round performance mid-layer that should be your go-to for any expedition. Versatile four-way stretch fabric meets either military grade rip-stop or stronger-than-steel Dyneema fibres.

The ultimate combination of fit and function. Windproof, water resistant and reinforced against abrasion – do not leave home without it this Autumn.

Mid Layers

Know yourself and know your enemy, this is the key to victory. Specialised and innovative mid and fleece layers for every challenge, choose your weapon carefully.

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