Front detail of Sub Zero Factor 1 short sleeve base layer in khaki

Factor 1 Short Sleeve Base Layer Top

XSmall / f1pkhaki
Sale price  £19.99 Regular price  £34.99
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Front detail of Sub Zero Factor 1 short sleeve base layer in khaki

Factor 1 Short Sleeve Base Layer Top

Sale price  £19.99 Regular price  £34.99
Size
Color

Pickup available at Sub Zero Warehouse

Usually ready in 24 hours

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Factor 1 Short Sleeve Base Layer Top

XSmall / f1pkhaki

Sub Zero Warehouse

Pickup available, usually ready in 24 hours

35 Churchill Way
Fleckney
Leicester LE8 8UD
United Kingdom

+441162402634
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Factor 1 Unisex Short Sleeve Base Layer Tops are the perfect choice for those seeking lightweight, high-performance thermal underwear for active outdoor adventures.

Made from 100% polyamide ribbed fabric with advanced hydrophilic treatment, this base layer is designed to wick moisture away from your skin, keeping you dry and comfortable in all conditions. Its stretchy tubular construction offers a snug, flexible fit that moves with you, while the set-in sleeves ensure comfort around the shoulders and armpits.

With a generous body length, this top stays securely tucked in, preventing exposure around the lower back. Ideal for a wide range of activities—from hiking and skiing to camping—this versatile short sleeve top provides the perfect balance of comfort, warmth, and moisture control.

Whether worn on its own in milder weather or layered with other Sub Zero Mid Layer Thermals in colder conditions, the Factor 1 Short Sleeve Base Layer Top is a reliable and durable addition to your outdoor wardrobe.

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.

Features
  • 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.
  • Set-In Sleeves: Maximises wicking and provides a superior fit.
  • 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.
Technical
  • Brand: Sub Zero
  • SKU: SZF1SS
  • TOG: 0.42
  • Fabric: 100% Polyamide
  • Average weight: 140g / 4.9oz
  • Fit: Snug
  • Layer: First - next to the skin
  • Size availability: XSmall-XLarge
  • Colour: Khaki, Black, White, Pine Green
  • Fabric treatments: Hydrophilic
  • Washing instructions: 40°C wash with mild detergent, do not tumble dry, iron on low setting
  • Made in: Great Britain
Shipping & Delivery

We offer UK and international delivery, with shipping options and costs shown at checkout. 

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

Returns

Changed your mind? You can find full details of our returns process and eligibility in our returns policy. 

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