If you’re looking to add a little extra fun to your next adventure, the Men’s Altitude ‘Mongrel’ is for you! Don’t let the name fool you, this is one seriously good thermal Base Layer. The perfect combination of performance, warmth and comfort with a little bit of fun thrown in for good measure.  

Get in quick, all Mongrels are strictly limited edition and once they're gone, they're gone for good. 

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. 

Ultra Trail Australia mandatory gear approved thermals

Why you’d buy this: You like your stuff to fit nice and close to your body whether you wear it on its own, or under another layer and don’t want any extra bulk or bunching. You might also want a bit of extra length which this one gives you. It’s super soft and comfy, and 96% merino so it’s super natural which means almost no microplastic issues when you wash it or landfill when you’ve finished with it.

As with all our clothes, the merino delivers natural temperature regulation, breathability, moisture wicking and odour resistance.

SIZE & FIT

Designed to be worn as a body tight ‘contact fit’ layer. 

Drop back hem and extra length in body. Slightly looser than the Altitude long sleeve styles.

Thumb loops 

Model wears a size medium.
Model specs - height 181cm, chest 103cm, waist 32inch and wears size medium. 

BEST FOR 

Snow sports

Cycling

Running