REI's new Smartwool x Altra running collection is the outdoor collaboration we never knew we always wanted

Running through the cold seasons typically means more difficulties with breathability and moisture management , but a new collaboration between running brand Altra and merino wool pioneers Smartwool could have you running in comfort all winter long.

Not all outdoor collaborations make sense – take The North Face and Gucci, for example – but given what we know about these two brands, this one could be a match made in heaven (or at least in the Rocky Mountains).

Utah-based Altra is best-known for a preference for zero and low-drop running shoes which claim to give runners a more natural stride, while Colorado-based Smartwool champions the superpowers of merino wool , a natural fabric that boasts enviable breathability and odor control.

Together, the two have teamed up for a limited-edition line of running apparel available now through November 1 to REI members only. If you're in the market for a new pair of road running shoes , the best-selling Altra Escalante 4 is available with a breathable Smartwool Merino Knit upper to improve thermal comfort. This zero-drop shoe is available in women's sizing in navy and men's sizing in mineral blue .

Then, because merino works best when layered with more merino, the collection includes running socks such as the Smartwool x Altra Run Targeted Cushion Ankle Socks (men's and women's ) and Smartwool x Altra Cold Weather Run Targeted Cushion Crew Socks (designed in fun Twilight Blue for women ) both of which are built to improve friction. If you're new to merino, you'll be able to run in these socks again and again without having to wash them.

The collection is designed as a complete head-to-toe cool weather run kit featuring apparel and accessories and you can view the full line at REI .

Anyone can become an REI member for a one-time fee of $30 and receive rewards, discounts and exclusive deals.

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