Fit Men's Performance Fit Product Overview The Men's Mountain Bike Performance T-shirt is perfectly suited for a day on the trails or an afternoon in town. Our unique fabric blend allows the shirt to be lightweight, super soft, durable, with a premium feel. Specs and Features High quality 60% ring-spun cotton and 40% poly blend This unique blend allows the shirt to be lightweight, super soft, durable, and you don't have to worry about it shrinking in the wash. Size up if you prefer a looser fitting T-shirt Built for you We believe in the freedom and positive benefits of cycling. Whether you are a beginner mountain biker, weekend warrior, Enduro racer, or just love riding bikes with friends, we built our MTB gear for you.