Our Altitude range was originally designed as a baselayer, to fit close to your body for maximum performance, so it’s snug but soft, with plenty of give for extra comfort.

The Men’s Altitude Zip Base Layer thermal takes natural temperature regulation to a whole new level. It is the perfect ‘go to’ thermal layer for just about any adventure, especially if you’re expecting to hit a range of temperatures. Zip down when it’s mild, zip up and thumb loops on when the temperature drops. The high collar also offers an extra level of warmth beyond the  version of this top.

Flatlock stitching, raglan sleeves and tag free to eliminate chafe and maximize comfort. The drop back hem and extra body length is designed for tucking into your outer layers. Thumb loops keep your hands warm and stop your sleeves riding up when layering.

This Base Layer Thermal top is the perfect combination of performance, warmth and comfort.

(For a more relaxed fit try our .)

Ultra Trail Australia mandatory gear approved thermals.

SIZE & FIT 

Originally designed to be worn as a base layer, (is usually underneath something else), this is a ‘contact fit’ layer so will hug your body. If you don’t want it to fit, feel or look like a second skin, you might , or go up a size, but please note: even going up a size will fit quite close to your body because of the fabric and cut. 

Drop back hem and extra length in body. 

Thumb loops.

Zip Neck.

True to size. 

Model wears a size medium in Dark Khaki, and Dark Blue Marle.
Model specs - height 179cm, chest 91.5cm, waist 81cm, hips 88.3cm.

Model wears a size medium in Forest Marle, Rust, Morocaan Blue, and Green.
Model specs - height 181cm, chest 103cm, waist 81cm.

Model wears small in Black, and Charcoal Marle.
Model specs - height 173, chest 99cm, waist 76cm.

BEST FOR

Snow Sports

Cycling

Running