Base Layers & Underwear

Base Layers & Underwear - Outdoor & Tactical Layering

Regulate temperature and stay comfortable, our Base Layers & Underwear collection delivers reliable performance across a wide range of conditions. Suited to outdoor, tactical and work use, these layers manage moisture, add insulation and support all-day wear.

Worn in cold weather as part of a layered system or in warmer conditions to wick sweat away from the skin, our base layers help keep you comfortable during active use.

Shop by brand, including Highlander, Viper Tactical, Jack Pyke and Mil-Tec.

What you'll find in this collection

• Base layer tops for thermal regulation and moisture control
• Lightweight and insulating options for different temperatures
• Base layer shorts and boxer shorts for everyday comfort
• Breathable fabrics designed for high-activity environments
• Durable construction suitable for repeated, real-world use

Chosen for practical performance, these base layers form the foundation of an effective clothing system, ideal for hiking, training, field use and outdoor work in changing UK conditions.

Ideal for

Hiking & Bushcraft • Tactical Training • Outdoor Work • Cold & Warm Weather Use • Camping • Everyday Wear • Military & Cadet

Related collections

Part of Clothing. Browse Mid-Layers & Hoodies or T-Shirts.

Frequently Asked Questions

What does a base layer do?

A base layer sits next to the skin to manage moisture and help regulate temperature, wicking sweat away in warm conditions and adding a layer of insulation when it is cold.

Should a base layer fit tightly?

Base layers generally work best with a close, comfortable fit so they can wick moisture effectively. Check the size guidance on each product page.

Can base layers be worn in warm weather?

Yes. Lightweight base layers help wick sweat and keep you cool in warm conditions, as well as adding warmth as part of a layered system when it is cold.