Factor 2

These thermal mid layers are manufactured from open width (roll) fabric and are produced using cut and sew techniques. These are designed marginally larger than our thermal base layers so they can be either worn next to the skin or over a base layer - they still want to be worn snugly otherwise any trapped hot air will be wafted out when moving.

Xsmall Small Medium Large Xlarge XXLarge 3XLarge 4XLarge 5XLarge
Chest Inches 31-33 34-36 37-39 40-42 43-44 44-45 52-54 58-60 60-64
Chest cm 79-84 86.5-92 94-99 102-107 109-112 112-114 132-137 147-153 153-163
Sleeve length inches 24 25 26 27 28 29 29 29.5 30
Sleeve length cm 61 64 66 69 71 74 74 75 76
Back drop inches 25 26 27 28 29 30 30 31 32
Back drop cm 63.5 66 69 71 74 76 76 79 81
Front drop inches 21 22 23 24 25 26 27 28 29
Front drop cm 54 56 59 61 64 66 69 71 73
Waist inches 26-28 29-31 32-34 35-37 38-40 41-42
Waist cm 66-71 74-79 81-87 89-94 97-102 104-107
Inside leg inches 26 27 28 30 31 32
Inside leg cm 66 69 71 76 79 81
Womens UK size 6 8 10-12 14 16-18 20 22 24 26
Womens European size 34 36 38-40 42 44-46 48 50 52 54

Sub Zero Mens Factor 2 Thermal Mid Layer Zip Turtle Top

£54.99 RRP £64.99 - save 15.39%

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Sub Zero Mens Factor 2 Thermal Mid Layer Zip Turtle Tops are manufactured form soft virgin polyester single sided micro fleece with a hydrophilic treatment to aid moisture control and drying times. The in-built stretch allows base layers to be worn underneath these thermal mid layers without being restrictive.

The long body length in combination with a drop back prevents any cold spots during activity. Set-in sleeves and contoured body panels provide a tailored fit that increases wicking efficiency and thermal efficiency. Thumb holes in the low profile cuff stops sleeves from riding up when extra layers are added and protects your hands from the cold. The stand-up double thickness turtle neck features a 18cm / 7 inch long zip that finishes just under the chin with a chin guard and a reverse wind baffle.

These thermal mid layer zip turtle tops are one of the most popular insulating thermal upper layers available, often referred to as Norwegian shirts. The high quality fabric and construction produces a garment that will last a lifetime, and are ideal when extra neck protection is required or if you need to vent yourself should you start to overheat. The Sub Zero mens thermal mid layer zip turtles are suitable for all cold weather and winter activities including mountaineering, polar expeditions, skiing and canoeing, or under your motorbike leathers.


Made in: Great Britain

Sun Protection Factor: 50+

TOG: 0.72

Fabric: 94% Polyester, 6% Spandex

Average weight: 295g / 10oz

Fit: Snug

Layer: First - next to the skin or second layer over a base layer

Size availability: XSmall-5XLarge

Colour: Red, Black, Cobalt Blue, Khaki, Navy, White

Fabric treatments: Hydrophilic

Washing instructions: 40°C wash with mild detergent, do not tumble dry, iron on low setting



1 Reviews






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Oct 18, 2017

Best mid layer around

I've had my Factor 2 thermals for three years now and wear them non-stop through the winter on my bike. I only wish i knew about them sooner - It would have saved a lot of cold journeys!


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