Factor 1 Base Layer Vest Top

Factor 1 Base Layer Vest Top are designed with a snug, 100% stretch fit, providing the comfort of a second skin and adapting effortlessly to most body shapes. The long-cut design and stretch fabric ensure the vest stays in place, preventing it from riding up during activity and eliminating discomfort or cold spots on your lower back.

Featuring a super-efficient hydrophilic finish, this base layer wicks away perspiration, keeping your skin warm and dry in all conditions.

Ideal for adding core warmth under other base layers or wearing discreetly beneath workwear during commutes, this thermal vest delivers exceptional insulation without adding bulk to your arms.

Please note: These are end of line garments. There may be some slight colour variations where they have been folded, and some may have different versions of our logo, but apart from this these base layers are perfect. We have greatly reduced the price to reflect this.

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

Size

£12.99

Only 24 left in stock.
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  • Thermal Efficiency: Advanced polyamide Factor 1 fabric construction retains heat whilst wicking away moisture.
  • Lightweight & Breathable: Ensures unrestricted movement and optimal temperature regulation.
  • High Wicking: hydrophilic treatment within the yarn actively transports moisture away from the skin.
  • Generous Length: Helps prevent lower back exposure during activities.
  • Unisex Design: Tailored for both men and women for versatile wear.
  • Flatlock Seams: Minimises chafing and enhances comfort during extended use.
  • Easy Care: Machine washable and quick drying.
  • Brand: Sub Zero
  • SKU: SZF1V
  • TOG: 0.42
  • Fabric: 100% Polyamide
  • Average weight: 115g / 4.1oz
  • Fit: Snug
  • Layer: First - next to the skin
  • Size availability: Small-XLarge
  • Colour: White
  • Fabric treatments: Hydrophilic
  • Washing instructions: 40°C wash with mild detergent, do not tumble dry, iron on low setting
  • Made in: Great Britain

We ship worldwide using Royal Mail, UPS & DPD. Please use the tables below as a guide for working out the shipping prices to your address. Please be aware that the product weights stated in the listings are for the products themselves, not the final weight when packaging is included. Our system will automatically calculate this and provide a total order weight during checkout. 

If you are unable to complete the checkout process when coming to choose a shipping option, then your order may be over the shipping weight limit for your address. Please call us on +44 (0)116 2402634 or email us at sales@subzero.co.uk and we can give you a custom shipping quote. 

For more detailed information regarding our shipping process please visit our comprehensive Shipping Page

UNITED KINGDOM

*All UK orders over £50 are shipped free of charge

Order Weight Royal Mail Tracked 24 Royal Mail Tracked 48 Royal Mail Guaranteed Before 1pm DPD Next Day
0.5kg £5.49 £3.99 £9.99 £8.99
1.0kg £6.49 £4.99 £11.99 £8.99
1.5kg £6.49 £4.99 £13.99 £8.99
2.0kg £6.49 £4.99 £13.99 £8.99
10.0kg N/A N/A N/A £8.99

 

USA & CANADA

*All USA & Canada orders over £200 are shipped free of charge

Order Weight DPD 7-14 Days Royal Mail International Tracked
0.25kg £16.99 £9.99
0.5kg £16.99 14.99
0.75kg £16.99 £16.99
1.0kg £16.99 £19.99
1.5kg £16.99 £22.99
2.0kg £16.99 £24.99
4.0kg £24.99 N/A

 

EUROPE

Order Weight DPD 7-14 Days Royal Mail International Tracked UPS 7-14 Days
0.25kg £11.99 £9.99 £49.99
0.5kg £11.99 £12.99 £49.99
0.75kg £11.99 £14.99 £49.99
1.0kg £11.99 £17.99 £49.99
1.5kg £11.99 £19.99 £49.99
2.0kg £11.99 £21.99 £49.99
4.0kg £19.99 N/A £49.99

 

 REST OF WORLD

Order Weight Royal Mail International Tracked
0.25kg £9.99
0.5kg £14.99
0.75kg £16.99
1.0kg £19.99
1.5kg £22.99
2.0kg £24.99
4.0kg N/A

 

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

If you would like to return your order, then you have 180 days from its receipt to do so.

A full refund or exchange is available, provided the items are in their original condition, unworn/unused, and with all tags attached.

Faulty items can be returned free of charge for a refund, repair, or replacement.

To initiate a return, customers should first contact Sub Zero's customer service team on sales@subzero.co.uk with the return details.

The return shipping costs are the customer's responsibility unless the item is faulty or an error has been made with the order

For more detailed information, please refer to Sub Zero's official refund policy.

  • Thermal Efficiency: Advanced polyamide Factor 1 fabric construction retains heat whilst wicking away moisture.
  • Lightweight & Breathable: Ensures unrestricted movement and optimal temperature regulation.
  • High Wicking: hydrophilic treatment within the yarn actively transports moisture away from the skin.
  • Generous Length: Helps prevent lower back exposure during activities.
  • Unisex Design: Tailored for both men and women for versatile wear.
  • Flatlock Seams: Minimises chafing and enhances comfort during extended use.
  • Easy Care: Machine washable and quick drying.
  • Brand: Sub Zero
  • SKU: SZF1V
  • TOG: 0.42
  • Fabric: 100% Polyamide
  • Average weight: 115g / 4.1oz
  • Fit: Snug
  • Layer: First - next to the skin
  • Size availability: Small-XLarge
  • Colour: White
  • Fabric treatments: Hydrophilic
  • Washing instructions: 40°C wash with mild detergent, do not tumble dry, iron on low setting
  • Made in: Great Britain

We ship worldwide using Royal Mail, UPS & DPD. Please use the tables below as a guide for working out the shipping prices to your address. Please be aware that the product weights stated in the listings are for the products themselves, not the final weight when packaging is included. Our system will automatically calculate this and provide a total order weight during checkout. 

If you are unable to complete the checkout process when coming to choose a shipping option, then your order may be over the shipping weight limit for your address. Please call us on +44 (0)116 2402634 or email us at sales@subzero.co.uk and we can give you a custom shipping quote. 

For more detailed information regarding our shipping process please visit our comprehensive Shipping Page

UNITED KINGDOM

*All UK orders over £50 are shipped free of charge

Order Weight Royal Mail Tracked 24 Royal Mail Tracked 48 Royal Mail Guaranteed Before 1pm DPD Next Day
0.5kg £5.49 £3.99 £9.99 £8.99
1.0kg £6.49 £4.99 £11.99 £8.99
1.5kg £6.49 £4.99 £13.99 £8.99
2.0kg £6.49 £4.99 £13.99 £8.99
10.0kg N/A N/A N/A £8.99

 

USA & CANADA

*All USA & Canada orders over £200 are shipped free of charge

Order Weight DPD 7-14 Days Royal Mail International Tracked
0.25kg £16.99 £9.99
0.5kg £16.99 14.99
0.75kg £16.99 £16.99
1.0kg £16.99 £19.99
1.5kg £16.99 £22.99
2.0kg £16.99 £24.99
4.0kg £24.99 N/A

 

EUROPE

Order Weight DPD 7-14 Days Royal Mail International Tracked UPS 7-14 Days
0.25kg £11.99 £9.99 £49.99
0.5kg £11.99 £12.99 £49.99
0.75kg £11.99 £14.99 £49.99
1.0kg £11.99 £17.99 £49.99
1.5kg £11.99 £19.99 £49.99
2.0kg £11.99 £21.99 £49.99
4.0kg £19.99 N/A £49.99

 

 REST OF WORLD

Order Weight Royal Mail International Tracked
0.25kg £9.99
0.5kg £14.99
0.75kg £16.99
1.0kg £19.99
1.5kg £22.99
2.0kg £24.99
4.0kg N/A

 

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

If you would like to return your order, then you have 180 days from its receipt to do so.

A full refund or exchange is available, provided the items are in their original condition, unworn/unused, and with all tags attached.

Faulty items can be returned free of charge for a refund, repair, or replacement.

To initiate a return, customers should first contact Sub Zero's customer service team on sales@subzero.co.uk with the return details.

The return shipping costs are the customer's responsibility unless the item is faulty or an error has been made with the order

For more detailed information, please refer to Sub Zero's official refund policy.

Factor 1 Base Layer Vest Top are designed with a snug, 100% stretch fit, providing the comfort of a second skin and adapting effortlessly to most body shapes. The long-cut design and stretch fabric ensure the vest stays in place, preventing it from riding up during activity and eliminating discomfort or cold spots on your lower back.

Featuring a super-efficient hydrophilic finish, this base layer wicks away perspiration, keeping your skin warm and dry in all conditions.

Ideal for adding core warmth under other base layers or wearing discreetly beneath workwear during commutes, this thermal vest delivers exceptional insulation without adding bulk to your arms.

Please note: These are end of line garments. There may be some slight colour variations where they have been folded, and some may have different versions of our logo, but apart from this these base layers are perfect. We have greatly reduced the price to reflect this.

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

FREE UK Shipping
On all orders over £50
Quick Delivery
All orders will be delivered within 2-6 business days
Hassle-Free exchange
180 days return policy
5.0 Google Reviews
Customer satisfaction #1 priority