Get a little more cold weather protection with Pearl Izumi's Barrier Base Layer. Wicking P.R.O. Transfer Dry fabric on the sides and back are combined with a windproof P.R.O. Barrier Stretch front panel to deliver comfort, breathability, and wind protection all in one stellar top. It also features a close, stretchable fit that's perfect under form-fitting jerseys and a long back that accommodates a cycling position.