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Portwest Extreme Cold Weather Sock - Black/Grey | SK18NAR

Product Code: 5036108200511

€14.99

Home Delivery
Click & Collect
Size: Size 44-48

Description

  • Double layer knit traps heat close to the skin
  • 40% wool outer shell for warmth and odour resistance
  • 100% Viafil inner lining for insulation and moisture transfer
  • Seamless toe construction eliminates pressure points
  • Cushioned heel reduces friction during long shifts
  • Antimicrobial and anti-odour properties for all-day freshness
  • 41 cm sock height for lower leg coverage
  • Certified to SATRA TM 436 and CE approved
  • Knit gauge 9 for shape retention after washing
  • Wash at up to 40°C - no tumble drying or ironing required

Portwest SK18 Thermal Work Socks for Cold Weather

Double Layer Construction for Lasting Warmth:

The SK18 uses a double layer knit design that traps a layer of warm air close to the skin. The outer shell contains 40% wool alongside acrylic and nylon, while the inner layer is 100% Viafil - a branded fibre chosen for its insulating and moisture-transfer properties.

Comfort Through Long Working Days:

A cushioned heel reduces friction during prolonged wear, and the seamless toe construction eliminates pressure points that standard seamed socks can cause. The knit gauge of 9 helps the sock retain its shape wash after wash, so the fit stays consistent over time.

Antimicrobial and Moisture-Wicking Performance:

Polyolefin insulating material within the construction supports moisture management, drawing perspiration away from the skin to keep feet dry. The antimicrobial and anti-odour treatment makes these socks practical for full-day use in cold, damp, or demanding outdoor environments.

Cover and Certification:

At 41 cm in height, the SK18 provides coverage well up the lower leg - useful under work boots and cold-weather footwear. These socks are certified to SATRA TM 436 and carry CE certification, confirming they meet the requirements of relevant PPE standards.

Shop the full Footwear range from Heavins.ie, with delivery available across Ireland.

Specifications

  • Outer shell composition: 40% Wool, 40% Acrylic, 20% Nylon
  • Inner lining: 100% Viafil
  • Insulating material: Polyolefin
  • Sock height: 41 cm
  • Knit gauge: 9
  • Size: EU 39-43
  • Colour: Black
  • Construction: Seamless toe
  • Certifications: SATRA TM 436, CE certified
  • Max wash temperature: 40°C (normal process)
  • Do not bleach, do not tumble dry, do not iron, do not dry clean
  • 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

Why Shop With Us?

Frequently Asked Questions

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.

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.

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.

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.

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.