Smartwool Merino Sport 150 3/4-Sleeve Jersey - Men's Medium Gray Heather, XL

It's tricky to keep your temperature regulated while enjoying high-alpine singletrack or late-season trail rides. We opt for the Merino Sport 150 Jersey because the merino wool construction and 3/4-sleeve length perfectly balance ventilation and moisture-wicking properties to ensure we stay dry and comfortable through the early morning frost and into the mid-afternoon when the temperature starts to rise.