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 Unisex Factor 2 Thermal Mid Layer One Piece Suit


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Sub Zero Unisex Factor 2 Thermal Mid Layer One Piece Suits 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 set-in sleeves and contoured body panels on these thermal mid layer onesies provide a tailored fit that increases wicking and thermal efficiency, whilst the full length 2-way YKK zip allows easy access. The low profile leg cuffs feature elasticated foot stirrups to stop them riding up when worn with one piece outer layers or boots, and the double thickness fabric arm cuffs provide extra protection around the wrists - although they but do not feature thumb holes like the rest of the Factor 2 thermal mid layer tops due to manufacturing restraints. For extra neck protection, the stand-up turtle neck is also manufactured from double thickness Factor 2 fabric.

Sub Zero unisex Factor 2 thermal mid layer one piece suits offer full body protection for the coldest of environments, and are ideal for wearing under motorbike leathers, dry suits or expedition outerwear.

* Please note: the Factor 2 one piece suit does not feature a rear flap.


Made in: Great Britain

Sun Protection Factor: 50+

TOG: 0.72

Fabric: 94% Polyester, 6% Spandex

Average weight: 420g / 14.8oz

Fit: Unisex snug

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

Size availability: XSmall-5XLarge

Colour: Black

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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Nov 27, 2017

Why wear anything else under leathers

I've been wearing these thermals under my leathers for a long time now and have yet to find any others that can beat them


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