The Bike SubZ 2 Long-Sleeve Jersey splits its construction into two distinct fabric weights: a heavier recycled polyester shell and a brushed, grid-structured recycled polyester lining underneath. That pairing traps warmth through a long, cold effort without adding the bulk of a full jacket. An elastic, ergonomic cut holds the fabric in the riding position instead of pulling at the shoulders or riding up at the hips, and four back pockets, one zippered, keep essentials in reach for the length of a winter ride. What Our Gearhead(R) Experts Are Saying:"On a two-hour endurance ride in the low 30s, this jersey kept my core warm the entire way without a baselayer underneath. I only add one when the ride turns into a series of hard efforts with long recovery stretches in between, since that's when the pace drops enough for the cold to catch up."