Base Layers & Thermal Underwear

This classic base layer has been keeping explorers warm and dry for over half a century, without really having changed much. But why change what ca...

A long sleeve base layer top that can also be used as a mid-layer during the warmer months. The moisture wicking quick dry polyester material keeps...

This highly breathable and moisture wicking t-shirt is great for wearing below a plate carrier or chest rig; Will keep you dry and comfortable whe...

These military style boxer shorts are made from 100% cotton to provide comfort & warmth while still being soft to the touch. Ideal for use in t...

The Brynje Super T-Shirt is designed to provide warmth and maximum breathability. The advantages of this 100% mesh design are clear when worn; The ...

You'll never wear a non-performance T-shirt again. Featuring Under Armour's signature moisture transport and compression fit to keep you cool, dry,...

✓ Compression ✓ Moisture Wicking The Plexis base layers are designed to keep you dry and cool all day long while also regulating your body tempera...

This classic base layer has been keeping explorers warm and dry for over half a century, without really having changed much. But why change what ca...

✓ Compression ✓ Moisture Wicking The Plexis base layers are designed to keep you dry and cool all day long while also regulating your body tempera...

The Legion Compression Short Sleeve Shirt by Compressport Tactical is a revolutionary new concept in base layers; The interactive fibres breathe wi...

The Quick Dry Tactical Long Sleeve Top by Mil-Tec has been created as activewear for professionals; Use as a base layer during the colder months or...

✓ Compression ✓ Moisture Wicking The Plexis base layers are designed to keep you dry and cool all day long while also regulating your body tempera...

The Termo Original Medium Polo with Zipper is best suited for those who spend long periods outdoors where moderate physical activity is intersperse...

✓ Compression ✓ Moisture Wicking The Plexis base layers are designed to keep you dry and cool all day long while also regulating your body tempera...

This Mesh Short Sleeve T-Shirt by Mil-Tec has been created for professional users and offers all the comfort of a regular base layer while improvin...

The benefits of Coolmax are as applicable to Sport, as to use in the Field; Wicks away sweat and keeps you dry.  A huge step forward in performance...

The Raider Compression Long Sleeve Shirt is probably one of the most lightweight base layers currently on the market; Ultra breathable with mesh pa...

The Brynje Super Thermo Long Johns are designed to provide warmth and maximum breathability. The advantages of this 100% mesh design are clear when...

✓ Merino Wool ✓ Warm The Norwegians know about the cold and the Brynje Arctic Zip Polo is designed using their wealth of knowledge and experience. ...

WARNING! This product is not flame-retardant, never use this Under Armour® product as a substitute for flame-retardant or ballistic protective equi...

The Termo Original Heavy Long Johns with Fly are their best sellers that have been created for those who spend long periods outdoors, where physica...

The Termo Original Heavy Polo Shirt with Zipper is their best selling base layer top that has been created for those who spend long periods outdoor...

What could offer better thermal properties than wool? Well, that is why these Termo Wool base layers are so popular and the non-itchy mulesing-free...

These ultra-warm wool thermal long johns are sure to keep you warm all day long. The pure, fine quality, mulesing-free merino wool ensures that the...