Factor 2 Mid Layer Onesie

Factor 2 Unisex Mid Layer Onesies offer full body protection for the coldest of environments, and are ideal for wearing under motorbike leathers, dry suits or expedition outerwear.

Manufactured from soft virgin polyester, this single sided micro fleece has a hydrophilic treatment added to it during the finishing process to aide moisture control and decrease drying times. The brushed inner face traps warm air from your body, insulating it from loss to the cold outdoors, whilst the smooth outer layer enables hinder free additions of extra layers. The inclusion in to the fabric of Spandex provides extra stretch, allowing these mid layers to contour to your bodies shape without being restrictive, either when worn next to the skin, or over the top of base layers.

The set-in sleeves and contoured body panels on these onesies provide a tailored fit that increases wicking and thermal efficiency, whilst the full length 2-way YKK zip allows easy access to the front. The low profile leg cuffs feature elasticated foot stirrups to stop them riding up when worn with 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 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. 

Depending on the climatic conditions you find yourself in, these onesies can either be worn over a base layer or on their own directly next to the skin. 

Please note: This onesie does not feature a rear flap.

Scroll down the page for further product details, technical information, sizing, shipping and any washing instructions.

Size

$130

Only 4 left in stock.
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  • Soft virgin polyester Factor 2 fabric
  • Full length YKK zip
  • Elasticated stirrups
  • Set-in sleeves
  • Double thickness collar
  • Flat seam stitching
  • Double thickness cuff
  • Lots of stretch both vertically and horizontally
  • Easy to wash
  • Quick to dry
  • Brand: Sub Zero
  • SKU: SZF2OPS
  • 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-XXLarge
  • Colour: Black
  • Fabric treatments: Hydrophilic wicking management
  • Made in: Great Britain

SIZING GUIDE
There are no standard sizes for clothing, which is why each brand has their own unique cut and fit. Please do not presume you are the same size between brands for a similar product. If you already own a onesie that fits correctly, then use it as a template for these measurements.  

HOW TO MEASURE
Chest  - Measure the full circumference of your chest just below the armpits
Inside Leg - Measure from the top of your groin down the inside of your leg to the ankle bone. 
Arm LengthMeasure from the end of your shoulder to your wrist
Back Drop - Measure from the back of your neck to under your buttocks

MID LAYER ONESIE & BIB FIT
These mid layers will contour to most body shapes when worn thanks to the fabrics in-built stretch. We provide a unisex sizing in these. You should wear them close fitting but not so they are restrictive. Wearing baggy or ill fitting mid layers will lead to the loss of heat and a reduction in their wicking properties.

These mid layers are designed to be worn over the top of our base layers but they can be worn directly next to the skin if required. Sizes for both Sub Zero base layers and mid layers are comparable - so if you wear a Factor 1 plus base layer in large, then you should require a Sub Zero Factor 2 mid layer in the same size and vice versa. However, this may not work out for everybody so please consult the size chart below. 

Please be aware that the inside leg, arm length, and back drop  measurements are taken from the garments unstretched. The chest measurement indicates the range of fit. 

The table below shows the garment measurements for our Factor 2 Onesie and Bib ranges. The bib design is based on the onesie patterns, it just excludes the sleeve length. There is a tolerance of +/- 5mm.

SIZE CHEST INSIDE LEG ARM LENGTH BACK DROP
cm in cm in cm in cm in
XSMALL 79-84 31-33 66 26 58 23 78 31
SMALL 86-92 34-36 69 27 60 23.5 81 32
MEDIUM 94-99 37-39 71 28 63 24.5 83 33
LARGE 102-107 40-42 76 30 67 26.5 86 34
XLARGE 109-112 43-44 79 31 69 27 90 35.5
XXLARGE 112-114 44-45 81 32 72 28.5 92 36

We ship worldwide using Royal Mail & UPS. All UK orders over £35 are shipped free of charge.

For more information regarding our shipping, including charges and estimated delivery times, please visit our Shipping Page

If you are unhappy with your purchase, please return it to us within 180 days of receipt. To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging.

For more information regarding our returns policy please visit our Returns Page

Washing instructions for Sub Zero Factor 2 mid layers and Factor 2 Plus mid layers are printed on a white silk tag stitched to the back neck. Please follow these instructions carefully as failure to comply with them will make your guarantee void. If you have removed the tag or are unsure of the washing symbol meaning, the full washing instructions can be found below.

  • Machine wash or hand wash in water not exceeding 40°C or 105°F
  • You can use a mild washing detergent but ideally you want to use a mid layer specific washing treatment 
  • Wash dark colours separately, do not bleach, do not use fabric conditioners
  • These mid layers can be spun dry in a washing machine
  • Do not tumble dry. These mid layers will quickly dry on a line or airer as they retain very little water once spun/rung out. 
  • Do not dry clean
  • Regular ironing may be performed at a low setting (110°C, 230°F) only, but we advise against it.

 

Due to the construction of the Factor 2 and Factor 2 Plus fabric, garments may be susceptible to pilling on areas that witness excess rubbing - inside thighs, armpits etc. It may also occur if Velcro or unguarded zips come in to contact with the fabric. Pilling is the formation of small lint beads caused by the rubbing of the fabric by external pressure. They do not affect the performance of the garment. Please do not remove these with a lint remover if possible as they protect the fabric from further pilling.   

GENERAL WASHING TIPS
When you go to wash any garment with a zip, ensure it is done up fully otherwise the exposed teeth may cause harm in the wash cycle. The same can be said for garments containing Velcro. Your best course of action would be to wash these garments either by hand or on their own in a washing machine.

With the advancement in detergent technology, you very rarely need to wash any garments these days above 30°C. It is better to use a specific anti-bacterial wash-in treatment rather than increasing the temperature.

A lot of Sub zero products, especially the base layers and mid layers, can be ironed on a low temperature setting. We would advise against this as the heat settings on irons are not always reliable. In any case, the stretch properties of synthetics helps reduce creases in the wash and if there are any afterwards, they often drop out when worn.

Like most synthetics, Sub Zero fabrics will melt or burn if exposed to flame or direct heat. They are not flame resistant; do not use them near ANY direct source of heat or flame. This includes some of our merino wool products that contain a small percentage of synthetic yarn.

  • Soft virgin polyester Factor 2 fabric
  • Full length YKK zip
  • Elasticated stirrups
  • Set-in sleeves
  • Double thickness collar
  • Flat seam stitching
  • Double thickness cuff
  • Lots of stretch both vertically and horizontally
  • Easy to wash
  • Quick to dry
  • Brand: Sub Zero
  • SKU: SZF2OPS
  • 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-XXLarge
  • Colour: Black
  • Fabric treatments: Hydrophilic wicking management
  • Made in: Great Britain

SIZING GUIDE
There are no standard sizes for clothing, which is why each brand has their own unique cut and fit. Please do not presume you are the same size between brands for a similar product. If you already own a onesie that fits correctly, then use it as a template for these measurements.  

HOW TO MEASURE
Chest  - Measure the full circumference of your chest just below the armpits
Inside Leg - Measure from the top of your groin down the inside of your leg to the ankle bone. 
Arm LengthMeasure from the end of your shoulder to your wrist
Back Drop - Measure from the back of your neck to under your buttocks

MID LAYER ONESIE & BIB FIT
These mid layers will contour to most body shapes when worn thanks to the fabrics in-built stretch. We provide a unisex sizing in these. You should wear them close fitting but not so they are restrictive. Wearing baggy or ill fitting mid layers will lead to the loss of heat and a reduction in their wicking properties.

These mid layers are designed to be worn over the top of our base layers but they can be worn directly next to the skin if required. Sizes for both Sub Zero base layers and mid layers are comparable - so if you wear a Factor 1 plus base layer in large, then you should require a Sub Zero Factor 2 mid layer in the same size and vice versa. However, this may not work out for everybody so please consult the size chart below. 

Please be aware that the inside leg, arm length, and back drop  measurements are taken from the garments unstretched. The chest measurement indicates the range of fit. 

The table below shows the garment measurements for our Factor 2 Onesie and Bib ranges. The bib design is based on the onesie patterns, it just excludes the sleeve length. There is a tolerance of +/- 5mm.

SIZE CHEST INSIDE LEG ARM LENGTH BACK DROP
cm in cm in cm in cm in
XSMALL 79-84 31-33 66 26 58 23 78 31
SMALL 86-92 34-36 69 27 60 23.5 81 32
MEDIUM 94-99 37-39 71 28 63 24.5 83 33
LARGE 102-107 40-42 76 30 67 26.5 86 34
XLARGE 109-112 43-44 79 31 69 27 90 35.5
XXLARGE 112-114 44-45 81 32 72 28.5 92 36

We ship worldwide using Royal Mail & UPS. All UK orders over £35 are shipped free of charge.

For more information regarding our shipping, including charges and estimated delivery times, please visit our Shipping Page

If you are unhappy with your purchase, please return it to us within 180 days of receipt. To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging.

For more information regarding our returns policy please visit our Returns Page

Washing instructions for Sub Zero Factor 2 mid layers and Factor 2 Plus mid layers are printed on a white silk tag stitched to the back neck. Please follow these instructions carefully as failure to comply with them will make your guarantee void. If you have removed the tag or are unsure of the washing symbol meaning, the full washing instructions can be found below.

  • Machine wash or hand wash in water not exceeding 40°C or 105°F
  • You can use a mild washing detergent but ideally you want to use a mid layer specific washing treatment 
  • Wash dark colours separately, do not bleach, do not use fabric conditioners
  • These mid layers can be spun dry in a washing machine
  • Do not tumble dry. These mid layers will quickly dry on a line or airer as they retain very little water once spun/rung out. 
  • Do not dry clean
  • Regular ironing may be performed at a low setting (110°C, 230°F) only, but we advise against it.

 

Due to the construction of the Factor 2 and Factor 2 Plus fabric, garments may be susceptible to pilling on areas that witness excess rubbing - inside thighs, armpits etc. It may also occur if Velcro or unguarded zips come in to contact with the fabric. Pilling is the formation of small lint beads caused by the rubbing of the fabric by external pressure. They do not affect the performance of the garment. Please do not remove these with a lint remover if possible as they protect the fabric from further pilling.   

GENERAL WASHING TIPS
When you go to wash any garment with a zip, ensure it is done up fully otherwise the exposed teeth may cause harm in the wash cycle. The same can be said for garments containing Velcro. Your best course of action would be to wash these garments either by hand or on their own in a washing machine.

With the advancement in detergent technology, you very rarely need to wash any garments these days above 30°C. It is better to use a specific anti-bacterial wash-in treatment rather than increasing the temperature.

A lot of Sub zero products, especially the base layers and mid layers, can be ironed on a low temperature setting. We would advise against this as the heat settings on irons are not always reliable. In any case, the stretch properties of synthetics helps reduce creases in the wash and if there are any afterwards, they often drop out when worn.

Like most synthetics, Sub Zero fabrics will melt or burn if exposed to flame or direct heat. They are not flame resistant; do not use them near ANY direct source of heat or flame. This includes some of our merino wool products that contain a small percentage of synthetic yarn.

Customer Reviews

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Factor 2 Unisex Mid Layer Onesies offer full body protection for the coldest of environments, and are ideal for wearing under motorbike leathers, dry suits or expedition outerwear.

Manufactured from soft virgin polyester, this single sided micro fleece has a hydrophilic treatment added to it during the finishing process to aide moisture control and decrease drying times. The brushed inner face traps warm air from your body, insulating it from loss to the cold outdoors, whilst the smooth outer layer enables hinder free additions of extra layers. The inclusion in to the fabric of Spandex provides extra stretch, allowing these mid layers to contour to your bodies shape without being restrictive, either when worn next to the skin, or over the top of base layers.

The set-in sleeves and contoured body panels on these onesies provide a tailored fit that increases wicking and thermal efficiency, whilst the full length 2-way YKK zip allows easy access to the front. The low profile leg cuffs feature elasticated foot stirrups to stop them riding up when worn with 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 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. 

Depending on the climatic conditions you find yourself in, these onesies can either be worn over a base layer or on their own directly next to the skin. 

Please note: This onesie does not feature a rear flap.

Scroll down the page for further product details, technical information, sizing, shipping and any washing instructions.

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