When the trail temperatures hit the triple digits, and the climb back to the car is long and near vertical, take refuge in the Stone Cold fabric of the Yeti Cycles Hayden Jersey. This top wraps around you with fabric that actively cools as you sweat, so you can stay as comfortable as possible when mother nature just doesn't relent. Not just keeping you cool, but keeping your smell under control, the fabric is combined with a Polygiene anti-odor treatment that won't wash out, staying fresh through the sweat, while DriRelease underarm panels work to dry you off. UPF-20 protection saves you some time from slathering yourself with sunscreen on the real scorchers, while a drop-tail hem covers your rear when you're flying like a bat out of hell down a steep ridgeline.