A great solution for hard-riding days in chilly fall or spring weather, the Trail-Series Thermal Jersey balances warmth with breathable performance. Grid-patterned fleece against the skin creates pockets of warmth while simultaneously improving breathability. Any excess moisture your skin produces is then drawn to the face of the fabric, which is engineered to disperse moisture for dry active comfort. The relaxed mountain bike fit blends performance tailoring with a more generous shape that's easy to get rowdy in, and a secure kangaroo pocket lends space for essential storage.