The Best Base Layers for Autumn Adventures

Autumn in the UK is a season of contrasts. One moment you’re bathed in crisp golden sunshine, the next you’re facing a sudden downpour or chilly breeze. For anyone who enjoys hiking, cycling, running, or camping at this time of year, the secret to staying comfortable is simple: layering.

At the very foundation of that layering system is the base layer — your first line of defence against the cold and damp. At Subzero, we’ve been perfecting technical clothing for decades, and our base layers are designed to keep you warm, dry, and ready for every autumn adventure.


Why Base Layers Matter in Autumn

A good base layer does more than just add warmth. It works with your body to regulate temperature and manage moisture:

  • Moisture-wicking: Sweating in cool conditions is a recipe for getting cold quickly. Technical synthetic fibres pull moisture away from the skin so it can evaporate.

  • Insulation without bulk: Base layers trap a thin layer of warm air close to your skin.

  • Temperature regulation: They keep you warm when you’re still and comfortable when you’re moving.

Cotton might feel soft, but once it’s wet, it stays wet — making you cold and uncomfortable. That’s why Subzero base layers use performance fabrics specifically designed for active outdoor use.

Woman wearing a Factor 1 plus long sleeve base layer in white whilst walking

Factor 1 Plus Base Layers – Lightweight Warmth

When you’re working up a sweat, you need a base layer that can keep up. Our Factor 1 Plus range is perfect for high-energy autumn activities such as running, cycling, or fast-paced hiking.

  • Lightweight and breathable

  • Soft next-to-skin comfort

  • Excellent moisture control

Top Picks:

These tops are ideal under a lightweight fleece or waterproof shell when you’re moving quickly and need reliable moisture management.

Sub Zero Factor 1 Plus mens long sleeve zip neck thermal base layer top front detail in black colour


Factor 2 Base Layers – Versatile Midweight Option

As the days get cooler, you’ll want amore warmth without compromising on breathability. That’s where Factor 2 comes in. Designed as a midweight option, it’s ideal for:

  • Long hikes where you’re alternating between activity and rest

  • Autumn camping trips when evenings get chilly

  • Everyday wear when you want technical comfort and casual style

Top Picks:

These midweight layers are excellent under a waterproof jacket, giving you that balance of warmth and breathability during stop–start activities.

Man wearing a black Sub Zero factor 2 zip neck top whilst cycling in bracken

Leggings and Bottom Layers

When it comes to autumn adventures, don’t neglect your legs. Cold, damp conditions can quickly sap energy, especially on the trail or bike. Subzero’s thermal leggings are designed to be worn under waterproof trousers, running tights, or hiking trousers.

Top Picks:

Whether you’re commuting by bike or hiking in the Peaks, a good pair of thermal leggings makes a huge difference.

Woman running on a path whilst wearing a pair of Sub Zero Factor 1 Plus stretch leggings with autumn foliage in the background


How to Layer Effectively in Autumn

Layering is all about flexibility. Here’s a simple formula for autumn:

  1. Start with a Subzero base layer (Factor 1 Plus or Factor 1 Eco, depending on the  activity).

  2. Add a mid-layer such as a fleece, insulated jacket, or Factor 2 top.

  3. Finish with an outer layer like a waterproof shell to block wind and rain.

  4. Don’t forget accessories – hats, gloves, and socks can transform comfort on cold, damp days.

This system means you can adjust your comfort on the go, whether you’re powering up a hill or sitting around a campfire.

Layering system for outdoor clothing

Final Thoughts: Be Ready for Every Autumn Adventure

Autumn is one of the best seasons to get outdoors — the air is fresh, the landscapes are stunning, and trails are quieter than summer. But staying comfortable means being prepared for sudden changes in weather.

A high-quality base layer is the most important step in your layering system. With Subzero’s Factor 1 Plus range, you’ll have the performance, comfort, and versatility you need for every autumn adventure.

👉 Explore the full collection here: Thermal Base Layers

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