SKU: PE1700001 TRI S

5.11 Cryo Tac Ultra Crew Socks (2 Pack)

£23.75
VAT Inc
Read our 9.8K reviews
Colour: Triple Black (007)
Size

5 in stock - Next day delivery available

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Overview

The 5.11 Cryo Tac Ultra Crew Socks are engineered to deliver exceptional comfort, cooling performance and support for professionals and outdoor enthusiasts who spend long hours on their feet. Featuring advanced CryoTac™ cooling yarn technology, these premium crew socks help regulate temperature while effectively managing moisture, ensuring your feet remain comfortable throughout demanding days.

Whether you're on patrol, working long shifts, hiking challenging trails or training outdoors, the Cryo Tac Ultra Crew Socks combine targeted cushioning, breathable construction and enhanced arch support to reduce fatigue and maximise comfort. Supplied as a convenient two-pair pack, they're built to perform day after day in demanding environments. citeturn0search0

Key Features
  • Supplied as a convenient 2-pair pack
  • CryoTac™ cooling yarns help regulate foot temperature
  • NO QUIT upper cuff stays securely in place throughout the day
  • Ultra-level heel and toe cushioning for enhanced impact protection
  • Enhanced arch support for improved stability and comfort
  • Breathable mesh zones increase airflow and ventilation
  • Comfort toe seam helps reduce friction and irritation
  • Moisture management technology helps keep feet dry
  • Odour control properties help maintain freshness
  • Designed for everyday professional, tactical and outdoor use
Specifications
  • Pack Size: Two pairs
  • Style: Crew socks
  • Construction: Performance polyester and nylon blend
  • Cushioning: Ultra cushioning at heel and toe
  • Support: Enhanced arch support
  • Ventilation: Breathable mesh zones
  • Additional Features: Moisture control, odour control and comfort toe seam
Cooling Comfort Throughout the Day

Built around 5.11's advanced CryoTac™ yarn technology, these socks are designed to help regulate temperature and improve comfort during prolonged wear. The specialist fibres work alongside strategically positioned breathable mesh panels to promote airflow around the foot, helping reduce heat build-up during physically demanding activities.

Moisture management and odour control technologies further enhance comfort by drawing perspiration away from the skin, helping feet remain drier and fresher whether you're working indoors, outdoors or covering long distances on foot. citeturn0search0

Support Where You Need It Most

The Cryo Tac Ultra Crew Socks feature targeted ultra-level cushioning beneath the heel and toe to absorb impact during walking, running and prolonged standing. Enhanced arch support helps improve stability while reducing foot fatigue, making these socks an excellent choice for users who spend extended periods in tactical, work or hiking boots.

A smooth comfort toe seam reduces friction inside the boot, while the signature NO QUIT cuff is designed to remain securely in position without slipping or bunching throughout the day, providing reliable comfort from the first mile to the last. citeturn0search0

Why Choose the 5.11 Cryo Tac Ultra Crew Socks?

The Cryo Tac Ultra Crew Socks combine advanced cooling technology with premium cushioning and long-lasting support, making them an ideal upgrade over standard everyday socks. Designed to perform in demanding operational, work and outdoor environments, they help improve comfort, reduce fatigue and keep feet feeling fresher throughout long days on your feet. Supplied as a two-pair pack, they provide dependable performance for work, training and everyday wear.

Performance & Use
  • Ideal for military and tactical personnel
  • Suitable for police, security and emergency services
  • Excellent for hiking, trekking and outdoor activities
  • Perfect for work boots and everyday footwear
  • Designed for long shifts, training and extended periods on your feet

Size Guide

Open the size guide to check sizing and get the best fit possible.

5.11 Tactical Boots

UK sizing shown alongside EU and US equivalents.

UK3455.566.577.588.599.51010.51111.51213
EU3737.538.5394040.5414242.5434444.54545.54647.548.549.5
US4566.577.588.599.51010.51111.512131415
CM22232424.52525.52626.52727.52828.52929.530313233
UK 3EU 37 | US 4
EU37
US4
UK 4EU 37.5 | US 5
EU37.5
US5
UK 5EU 38.5 | US 6
EU38.5
US6
UK 5.5EU 39 | US 6.5
EU39
US6.5
UK 6EU 40 | US 7
EU40
US7
UK 6.5EU 40.5 | US 7.5
EU40.5
US7.5
UK 7EU 41 | US 8
EU41
US8
UK 7.5EU 42 | US 8.5
EU42
US8.5
UK 8EU 42.5 | US 9
EU42.5
US9
UK 8.5EU 43 | US 9.5
EU43
US9.5
UK 9EU 44 | US 10
EU44
US10
UK 9.5EU 44.5 | US 10.5
EU44.5
US10.5
UK 10EU 45 | US 11
EU45
US11
UK 10.5EU 45.5 | US 11.5
EU45.5
US11.5
UK 11EU 46 | US 12
EU46
US12
UK 11.5EU 47.5 | US 13
EU47.5
US13
UK 12EU 48.5 | US 14
EU48.5
US14
UK 13EU 49.5 | US 15
EU49.5
US15

Sizing Instructions

How to Measure
Use your chest, neck, and arm length to find the right size for tops and outerwear. Use your waist measurement — where you actually wear your trousers — for bottoms and belts.

Neck
Measure around the base of your neck, where a collar would sit.

Chest
Measure under your arms and around the fullest part of your chest, keeping the tape parallel to the floor.

Arm Length
Slightly bend your elbow. Measure from the center back of your neck, over the top of your shoulder, and down to your wrist.

Pant Waist
Measure around your natural waistline — where your trousers actually sit, not necessarily your narrowest point.

Hip
Stand with your feet together and measure around the fullest part of your hips, keeping the tape parallel to the floor.

Inseam
Measure from the crotch straight down the inside of the leg to your ankle, or to your preferred trouser length.

Sizing instructions diagram
Measurements are approximate — for the best fit, compare against a similar garment you already own.