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Portwest Extreme Cold Weather Sock - Black/Grey | SK18NAR

Product Code: 5036108200511

€14.99

Home Delivery
Click & Collect
Title: Size 44-48

Description

  • Double-layer knit traps heat close to the skin
  • 40% wool shell for natural warmth and moisture management
  • 100% Viafil inner lining for insulation
  • Polyolefin insulating material for lightweight warmth
  • Seamless toe for a snug, secure fit
  • Cushioned heel reduces friction between foot and boot
  • Antimicrobial and anti-odour properties
  • SATRA TM 436 certified and CE marked

Portwest SK18 Thermal Work Socks for Extreme Cold Weather

Built for cold working conditions:

The Portwest SK18 is a thermal work sock designed specifically for use in extreme cold weather environments. Its double-layer knit construction traps heat close to the skin, while the polyolefin insulating material keeps warmth locked in without adding unnecessary bulk. At 41cm in height, the sock provides solid leg coverage for use with tall work boots.

Wool blend shell with Viafil inner lining:

The shell is knitted from a 40% wool, 40% acrylic, and 20% nylon blend, giving the sock natural temperature-regulating properties and excellent durability. The inner lining is 100% Viafil, which works alongside the shell to draw moisture away from the foot and maintain a dry, comfortable environment throughout the day.

Fit and foot care:

A seamless toe construction eliminates pressure points and reduces the risk of irritation during extended wear. The cushioned heel section reduces friction between the foot and the boot, and the knit gauge 9 construction helps the sock retain its shape wash after wash. Antimicrobial properties help control odour, keeping the sock fresh across long working shifts.

Shop our Footwear range from Heavins.ie, your trusted workwear and PPE supplier across Ireland.

Specifications

  • Brand: Portwest
  • Model: SK18
  • Colour: Navy
  • Shell composition: 40% Wool, 40% Acrylic, 20% Nylon
  • Inner lining: 100% Viafil
  • Knit gauge: 9
  • Sock height: 41cm
  • Certification: SATRA TM 436, CE marked
  • Max wash temperature: 40°C, normal process
  • Do not bleach, do not tumble dry, do not iron, do not dry clean
  • Country of origin: Ireland
  • Warranty: 1 Year

Shipping & Delivery

We are pleased to offer FREE delivery on orders over €499.00 to anywhere in the Republic of Ireland and Northern Ireland, and our Click & Collect service is FREE on all orders.

All items are shipped from the Athlone Warehouse in Co. Westmeath, Ireland so no import duties apply to the island of Ireland.

Delivery Costs to Republic of Ireland are €6.99 for orders Under €499.00

Same Day Dispatch €9.99
Orders placed before 12pm are dispatched the same working day, helping your items reach you sooner. Excludes bulky items.

Large Bulky Items
Please be aware that large, bulky items (large appliances, white goods, etc.) have a delivery charge of €39.99 for bulky items or €59.99 for extra bulky items to ROI

- We are now delivering to Northern Ireland with all delivery costs equal to the Republic of Ireland.

View our full Delivery & Collection information

Returns Policy

Due to our valued customer feedback, we have updated and improved our Returns Policy.

We now offer an exhange or refund on goods purchased online, and returned 14 days after purchase.

View our Full Returns Policy

Reviews

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Frequently Asked Questions

What is Viafil, and what does the inner lining actually do?

Viafil is the branded material used for the inner lining of these socks. It has anti-odour and anti-fungal properties, and transfers moisture away from the skin to keep feet dry throughout the working day. Combined with the polyolefin insulating layer and the 40% wool outer shell, it forms a three-zone construction designed to manage heat, moisture, and hygiene together. The SK18NAR39-43 uses this layered system throughout.

How warm are these socks, and what cold conditions are they built for?

These are built for extreme cold working environments, using a double-layer knit construction with a polyolefin insulating material between the outer shell and inner lining to trap heat close to the foot. The 40% wool outer shell retains warmth even after repeated washes. Cold protection has been independently tested to SATRA TM 436 and the socks carry CE certification.

How should these socks be washed to keep them in good condition?

Wash at a maximum of 40°C on a normal cycle. Do not bleach, tumble dry, iron, or dry clean. Following these care instructions helps the wool outer shell retain its shape and the double-layer construction maintain its thermal performance over time.

Will these socks fit comfortably inside heavy work boots?

A cushioned heel reduces friction between the foot and the boot, and the seamless toe eliminates the pressure ridge that can cause discomfort during a long shift - both details that matter in heavy footwear. The socks reach 41cm in height, giving extended coverage of the lower leg. The EU 39-43 size range corresponds to UK shoe sizes 6 to 9.

Can I recycle my old appliance or electrical item with Heavins.ie?

Yes, Heavins.ie is fully committed to environmental responsibility and participates in Ireland’s WEEE (Waste Electrical and Electronic Equipment) recycling scheme. That means when you buy a new electrical item from us, we offer free recycling of your old appliance or electrical item.

What happens if I need to return my order?

If you change your mind or need to return an item for any reason, we’ve got you covered with a comprehensive returns policy. Returns must be scheduled within 14 days of purchase, and the item must be returned in sellable condition, including original packaging where possible. Just contact our team to arrange a hassle-free return - Returns Policy >

Why shop with Heavins.ie?

Heavins.ie is a proud, 100% Irish-owned, family-run business based in Athlone. When you shop with us, you're supporting local jobs, local service, and a business that’s been part of the community for over 40 years.

We don’t just say we care - it’s recognised too. Heavins.ie was named Most Trusted Website of the Year and has won the Midlands Best Customer Service award, thanks to our focus on honest service, fast Irish delivery, and real customer care.