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37.5™ Technology

With 37.5 technology, patented active particles permanently embedded at the fiber level capture and release moisture vapor. Not only do these active particles provide 800% more surface area to the fiber, they also provide a unique driving force to remove moisture vapor unlike any other technology. By actively responding to body heat, the active particles use this energy from the body to accelerate the vapor movement and speed up the conversion of liquid to vapor, significantly increasing drying rates.


All Mountain Hem™

Designed to adjust to fit the requirements of different types of mountain footwear. Engineered hem adjustment is sized to accommodate most ski-mountaineering or ski-touring footwear when opened. When closed down the hem and lower leg are sized to fit over winter climbing boots while avoiding excess fabric that could cause a snagging or tripping risk.


A water repellent zipper. It is created by coating PU on the backside of a coil zipper. There are three types of film variations: shiny transparent film, matte transparent film and matte colored film with a high quality appearance.

AquaGuard® VISLON®

YKK’s water repellent zipper type for the “AquaGuard” series, is a polyurethane laminated tape on a “VISLON” zipper.
CONCEAL® is an invisible zipper where you can’t see the element.


Cirrus™ powered by 3M Featherless insulation

Cirrus™ is a new, breakthrough insulation that combines almost all the key benefits of natural down and synthetic fillings, while avoiding their limitations. Technical, water resistant fibres are expanded into a “down-like” structure, to create a cloud of warmth. Cirrus™ has been extensively tested in development to deliver the same warmth for its weight as 600 Fill Power duck down. Unlike other synthetic insulation it lofts freely to trap warmth. It compresses well when packed and is robust and durable. Its resistance to moisture, warmth when wet and speed of drying are very high: superior even to Hydrophobic Down and previous man-made insulations. Powered by 3M Featherless technology.


Durable Water Repellency – C6 – PFOA-free

There has been a recent move throughout the outdoor industry to replace c8 (8-carbon chain fluorocarbons) on DWR coatings to c6 (6-carbon chain) due to the potentially harmful perfluorooctanoic acid (PFOA) produced in the production of c8 fluorocarbons. All Rab® DWR coatings are c6 and are c8 free.



EN13537 is a European standard designed to standardise the temperature ratings on sleeping bags manufactured and/or sold in Europe. Our sleeping bags are rated using EN13537:2012 results.


The EOCA (European Outdoor Conservation Association) is an organisation which supports valuable conservation work by raising funds from within the European outdoor sector and promotes care and respect for wild places. Rab® are proud members of the EOCA.

Escape Artist™ pit zips

Extra long ventilation zips to vent core heat during periods of intense activity. The length of the zips means that you can take your arms completely out of the jacket. When your activity means that removing the garment is not an option combine this with unzipping the front opening for almost the same benefit. Loose sleeves can be retained under rucksack straps.

eVent® Waterproof Fabric

eVent® fabrics: direct venting technology.Reliable, proven technology: eVent® lets the sweat out.
Fully waterproof, air permeable and highly breathable. Direct Venting™ , microporous, ePTFE membrane. Sweat vents directly to the outside of the fabric.


Flashpoint™ Fabric

A unique and exclusive development to Rab® is the Flashpoint Jacket, using possibly the lightest 3 layer waterproof fabric available. The Flashpoint further emphasises the pursuit for the ultimate balance of performance, weight and protection.


Hydrophobic down is applied at source during down processing.

Rab® Hydrophobic Down offers the following benefits: Absorbs less water – Dries faster – Retains loft – Fluorocarbon free


Matrix™ Fabrics

The Matrix™ range of fabrics is a family of softshell fabrics specially chosen by Rab® for their unique perofmance qualities. There are a variety of weights and qualities and all Matrix™ fabrics feature a high level (30+) of UPF UV Protection. The Matrix™ variants we use are: Matrix™ DWS (Double Weave Stretch), Matrix™ SWS (Single Weave Stretch), Matrix™ SW (Single Weave), Matrix™ PRO (3 layer laminate), Matrix™ AP (Air Permeable)

MeCo™ Fabric Technologies

Rab® MeCo™ Baselayers are a mix of merino wool and 37.5™ Technology. These two materials together in Meco™ baselayers offer the best of both worlds.
Merino wool: Wool is the only fibre to absorb water vapour and water (can absorb up to 35% of its weight). It keeps body regulated to a more comfortable state during varied activities. 37.5™ : 37.5™ Technology is strong, flexible, resilient, easy to wash and rapid drying. The activated carbon radically increases surface area which spreads sweat rapidly to accelerate evaporation and drying times.


Is a VISLON® zipper with a metallic look. Shiny, slim elements look just like metal zippers, but because they’re plastic they’re much lighter.



zips are made from recycled materials such as PET bottles.


Pertex® Classic

A light and soft fabric which moves moisture away from the body while offering excellent weather protection.

Pertex® Classic Eco

Classic but woven using recycled yarns.

Pertex® Endurance

Coated water resistant, downproof, windproof and breathable fabric.Hydrostatic head 1000mm.

Pertex® Equilibrium®

Denier gradient wind resistant and highly breathable fabric with rapid moisture dispersal.

Pertex® Microlight

Light-weight, downproof, windproof, breathable fabric.

Pertex Quantum®

Featherweight, downproof, windproof, breathable fabric.

Pertex Quantum® GL

Developed especially for Rab® and 20% lighter than Pertex Quantum®.

Pertex Shield® +

A breathable microporous waterproof coating combines wind and water protection, reducing condensation build-up within the garment.

Pittards® Armortan (Glove Grip Technology)

Pittards® Armortan provides enhanced abrasion-resistance, preventing wear and tear on contact surface for increased durability.

Polartec® Alpha™

Is the latest evolution of synthetic insulation offering a rare combination of light-weight warmth and true breathability in a “puffy”
style garment.

Polartec® Hardface® Technology

A “surface-fusion polymer application” which can be added to almost any fabric dramatically increasing abrasion and snag/pick resistance. Enhances durable water repellency and creates a smooth surface for easy layering (Used on Powerstretch and Thermal Pro fabrics).

Polartec® NeoShell®

Is the first fabric to combine the superior breathability, ventilation, and stretch of a soft shell with the waterproof performance of a hard shell, delivering the best of both worlds.

Polartec® Power Dry®

Features a patented bi-component knit construction that uses different yarns on either side of the fabric. This creates two different surfaces: one that is optimised to move moisture away from the skin, the other to dry quickly.

Polartec® Power Stretch®

Body-hugging 4-way stretch, breathable fabric. Wind and abrasion resistant outer. Soft polyester inner layer pulls moisture away from the skin.

Polartec® Power Stretch® Pro™

As Polartec® Power Stretch® but with a nylon outer layer for improved durability.

Polartec® Power Shield®

Blocks 98% of the wind to prevent windchill, highly breathable, water repellent surface, extremely abrasion resistant, stretch for active comfort.

Polartec® Thermal Pro®

High loft fabrics with great warmth to weight ratios.

Polartec® Wind Pro®

Extremely breathable yet provides 4x more wind resistance than traditional microfleece.


Polygiene® is an active odour control technology for the treatment of high performance materials. Engineered to give wearers fresh-all-day confidence, Polygiene® is perfect for active people who demand natural, long-lasting odour protection.

PrimaLoft® Insulation

The benchmark in performance of all synthetic insulations, PrimaLoft® Gold Insulation is the go-to choice for adventurers looking for static protection in extreme conditions.

Pyrotec™ Insulation

Packable warmth – Multidenier construction – Soft and lofty for warmth – Low water absorbency – Good water resistance – Compressible – 100% recycled



A pioneer of the soft shell concept the Rab® Vapour-rise™ system provides superior levels of comfort and protection. Vapour-rise™ balances wicking, warmth and wind resistance to maintain a comfortable micro-climate within the garment through a wide range of activity levels and weather conditions. It is best worn either next to skin, or more commonly over a wicking base layer.


zippers are made of injected plastic elements, such as polyacetal resin and are much lighter than metal zippers of the same size. Rich element colour variations are created by formulating the colour pigment during the injection process.


YKK® Zip Technology

The YKK Group is trusted worldwide for their impeccable production standards and thorough quality control processes for slide fasteners, hook and loop fasteners, webbing tapes and plastic hardware. All the zips we use are YKK zips.