If you’re a avid runner, the Nike x Undercover GYAKUSOU collection is one you should have your eyes on—especially for the colder season. The layers keep you warm without added bulk, Dri-Fit layers keep you dry, and designs added by Jun Takahashi fuses a more-than-welcome style element that goes a bit further than other running collections.

Mr. Porter wanted to test out that technology and enlisted triathlete Brandon Del Campo to see what the highly touted features are made of. And after two hours in high elevation running around Colorado’s beautiful Estes Park, he came back dry as the desert. On top of that, there are awesome pictures to prove it. Shop the looks on Mr. Porter’s website.

[via mrporter]