Design Philosophy Wear it as a stand alone riding jersey to take the chill of spring or autumn rides, as a mid-layer under a waterproof during the colder winter months or just for kicking around. The SingleTrack Fleece is the kind of top you just won't want to take it off. Technical Fabrics. Grid backed fleece has long been used in the outdoor industry, but is a new addition to the mountain biking world. It balances insulation and breathability, keeping you warm and sweat free for the duration of a ride.
