The Best Thermal Clothing at Paddy Pallin

Choosing which thermals to use whilst on your camping or hiking trip will depend on the level of cold you are experiencing. If you are going to a cooler environment we recommend choosing a woollen thermal for durability and comfort. However, if you simply need thermals for sleeping at night outside, our other thermal options may be best to regulate your body temperature. Shop thermals from top brands in outdoor wear like Icebreaker, XTM Performance and Mons Royale.

Check out our article for tips on Choosing The Best Thermals For Your Activity.

Technical Thermal Clothing: Merino vs. Synthetic Thermal Apparel

Choosing the right thermal cloth depends on your activity. Merino thermal clothing is prized for its natural odour resistance, softness, and superior thermoregulation, providing warmth even when damp. Synthetic thermal apparel offers excellent moisture wicking, quick-drying performance and durability, often at a lower cost. Both materials provide the necessary next-to-skin layer to keep you insulated and dry in cool climates.

View our article here for more tips on Layering For The Outdoors.

The Essential Long Sleeve Thermal Top and Long John Thermals

Your thermal kit is incomplete without comprehensive coverage. We stock a range of functional long sleeve thermal tops and indispensable long john thermals for women, men and children. Look for features like half-zips for quick venting and flatlock seams to prevent chafing during active pursuits. These garments, often considered thermal under clothing or baselayers, are engineered for a comfortable, snug fit, making them the perfect foundation layer.

Paddy Pallin is your one stop shop for all things thermals, we stock a huge range of Men’s Thermals, Women’s Thermals and even Thermal Underwear and Socks! Explore our range today. 

Shop Merino Thermals

One of our most asked questions at Paddy Pallin is if we sell Merino thermals. The answer is yes! Our collection features a wide variety of high-performance Merino thermals men and women, built to provide the perfect base layer for regulating temperature during high-intensity activities. Merino thermal tops and long johns utilise the natural benefits of wool for superior warmth and odour resistance. 

Shop our complete range of Merino layers for your next outdoor adventure.

Thermals FAQs

Why should I wear thermal clothing?

You should wear thermal clothing because it acts as a base layer, trapping a thin layer of warm air next to your skin while efficiently wicking sweat away. This essential function keeps you dry, warm, and comfortable during cold-weather activities.

Check out our Baselayers Collection here for more thermal undergarment options. 

What is the difference between a thermal undershirt and a mid-layer?

A thermal skivvy or undershirt is worn directly against the skin to manage moisture and provide initial insulation. A mid-layer is worn over the thermal layer to provide bulkier insulation and warmth.

Are long sleeve thermals better than short sleeves?

As you’d expect, long sleeve thermals provide greater insulation and warmth across the body, making them essential for cold conditions and alpine environments. Short sleeves are better suited for high-intensity activities like trail running, or warmer temperatures where ventilation is needed.

Should I buy Merino wool or synthetic thermal apparel?

Merino wool thermal apparel is generally softer, more odour-resistant, and better at regulating temperature. Synthetic fabric is more durable, faster-drying, and often more budget-friendly. The choice depends on your budget and primary activity.

What should I wear under my long john thermal wear?

It's all up to you! The thermal layer is designed to be worn directly against the skin to efficiently manage moisture and maximise insulation effectiveness, however a pair of undies won’t prevent their effectiveness.