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01–BASE 02–MID 03–THERMAL 04–FIELD 05–WIND 06–RAIN 07–COLD LayerSystem™




7L are inspired by the multi-layered insulating system of the Generation III Extended Cold Weather Clothing System (GEN III ECWCS) from the U.S. Military that allows their Soldier to adapt to varying mission requirements and environmental conditions. The materials chosen offer a greater range of breathability and environmental protection, providing greater versatility in meeting Soldiers’ needs. 

The inspirational concept for our brand 7L (SEVENLAYER) comes from the actual ECWCS used by the US Military and other military forces around the world. ECWCS is the military acronym for Extended Cold Weather Clothing System and consists of several pieces of layered clothing designed to keep soldiers warm during extended periods of exposure to the cold.

7L utilise innovative outerwear technologies and proven material sciences and fuse it with fashionable apparel. We invest heavily into reseaching our designs and materials, ensuring our customers receive some of the best products on the planet.


LAYER 1: The Base Layer: Moisture Management

Crucial to the function of ECWCS is a high quality synthetic base layer designed to quickly wick moisture away from the skin, to prevent chafing and allow the other layers to work more effectively. In 2016 7L launched its first synthetic technical base layers in our Abrasion and Movement Systems, which can be found in the look book sections of the site. As the world started to move away from synthetics (or at least reduce them) we’ve moved towards more natural products, like our 100% cotton T-Shirts. Thats not to say we won’t do technical base layers again, but for now, fusing high performance materials with fashion is our USP (unique selling point).

One of the biggest advantages of cotton is that it is highly breathable. This means whenever you sweat, moisture will go through the T-Shirt and evaporate quickly. Your body’s way of cooling down is through sweating and having that moisture evaporate into the air. When you make it easier for your body to do this, this means you’ll get better cooling. The luxury and quality cotton 7L use, means quicker drying time so less embarrassing situations with wet chests, under the arms and backs.

Our 100% cotton t-shirts can also be worn in the wintertime as the first layer to all your winter clothes. By wearing cotton instead of some other blends, you won’t overheat and get uncomfortably sweaty when you go indoors where it’s warmer.

Other benefits to cotton are:

It’s Hypoallergenic

It’s Very Durable

It’s Completely Natural

It Doesn’t Have Odors

Static Shocks Aren’t an Issue


LAYER 2: The Mid-Layer: First Insulation

Our mid layer consists of shirts and Overshirts for that next level of comfort and protection which include properties for cooling and insulating. Our Level 2’s can act as UV protection from the sun or keep you cool in warmer environments such as our ORIGIN SYSTEM // Layer 2 // Overshirt with COOLMAX® technology. The COOLMAX® ALL SEASON technology keeps the wearer cool and on hot days and helps insulate on cold. The fabric is specifically engineered from a blend of Polyester fibres designed to improve breathability compared with natural fibres. It’s also engineered with a high level of elasticity, thanks to the 10% EA Lycra® making it extremely comfortable and forgiving.

At a Glance

  • Layer: Mid-Layer
  • Garments: Insulating Jacket, Fleece
  • Conditions: Wet and/or windy
  • Type of Material: 90%PES (63%PES Recycled – 27%PES Coolmax®), 10%EA Lycra®

LAYER 3: The Thermal Layer: Insulating 

Sometimes called the insulation layer, we call our the Thermal Layer. This Layer usually provides you with warmth which you can add over your base layers and under your field layer. Usually, your thermal layer is either a jumper, fleece or an insulated jacket.

Fleeces are available in different thicknesses and are quick-drying and breathable, offering warmth by retaining heat and removing moisture. Down insulated jackets are packable with an excellent warmth-to-weight ratio, whereas synthetic insulated jackets are able to retain heat even when wet.

For active outdoor pursuits, It’s best to avoid cotton mid-layers, as they will retain moisture which can lead to you getting cold. The most important consideration is to choose the right level of warmth to suit your activity and weather conditions.

In milder conditions, you may not need anything on top of your mid layer, but when the weather closes in, an outer shell will be necessary.

At a Glance

  • Layer: Mid-Layer
  • Garments: Insulating Jacket, Fleece
  • Conditions: Wet and/or windy
  • Types of Material: Polartec Thermal Pro fleece
  • PrimaLoft® Silver Insulation Active

LAYER 4: Field Layer: Wind and Light Rain Protection

Wind / Cold Weather Jacket Waterproof and Windproof Layer

Our Layer 4 is primarily a wind layer built for stormy light wet conditions. Its primary purpose is not to provide temperature protection, but cover from the wind and rain when the weather turns foul. In the military a nylon is normally used such as a 3L Waterproof but as 7L (Fashion with function) we manufacture from various fabrics and materials including cotton, nylon, polyester etc. with fabric makeups featuring water-resistant finishes to keep the wearer dry. It is lightweight and packs easily.

At a Glance

  • Layer: Outer-Layer
  • Garments: Parka
  • Conditions: Wet and/or windy
  • Military Material:  98% nylon / 2% spandex
  • 7L Materials: Cottons, Nylons, Polyesters

LAYER 5: Wind Layer: Wind Protection

Layer 5 jackets, parka’s or smocks offer heavy-duty wind protection while remaining comfortably lightweight. They’re also less heavy and bulky than similar garments before them. Built to be worn in a wide range of temperatures our layer 5’s are great with limited base layers when the weather is above freezing and worn with most (or all) previous layers in extreme cold.

At a Glance

  • Layer: Outer layer
  • Military Spec Garments: Soft shell
  • 7L Materials also include: Cottons, Dry Wax Cottons
  • Conditions: Dry to damp with DWR
  • Material: Water-resistant nylon / spandex mix

LAYER 6: Rain Layer: Extreme Wet Weather Protection

Our Layer 6 waterproof outer shell’s are designed for non-freezing temperatures. Their dual-layer, seam-taped (sealed) fabric offers elite weather protection.  Our new lightweight and durable 3L Waterproof Outer (WPO) is manufactured from 100% Japanese recycled polyester and a recycled hydrophilic monolithic membrane. The outer fabric specification includes a non-fluorinated durable water repellant finish (environmentally friendly) with a hydrostatic head of 20,000mm waterproofness and a Moisture Vapour Transmission rate of 20,000g per metre squared every 24 hours.

We say a garment is not fully waterproof unless it is seam taped on the inside. Seam taping enhances the waterproof protection as conventional needle stitching leaves tiny holes through which water can seep when worn in wet conditions. Our WPO comes fully bonded and seam taped with YKK Aquaguard® water resistant matt film reverse coil zips.

At a Glance

  • Layer: Outer layer
  • Garments: 3L Waterproof Outer
  • Conditions: Damp to wet
  • Material: SCHOELLER (Switerland) and TOYOTA (Japan)

LAYER 7: Cold Layer: Extreme Cold Weather Protection

The Layer 7 parka’s are for the most extreme, Arctic-like conditions. Rated to -40°F, these garments help to keep the wearer warm and safe when temperatures are well below zero. Layer 7 is worn with other layers to offer maximum insulation and protection from dangerously low temperatures. To prevent overheating, these garments should not be worn during strenuous activity but the down and membrane do allow for the transfer of body heat.

At a Glance

  • Layer: Outer layer
  • Garments: Parka
  • Conditions: Dry and damp
  • Material:  94% Polyester and 6% Spandex