Gore Wear C5 Thermo Long Sleeve Jersey Whether worn on its own or as part of a layering system, the Gore Wear C5 Thermo Long Sleeve Jersey will provide extra warmth and comfort when the temperature drops. Wear it over a vest for a bit more insulation than a normal short sleeve jersey and arm warmers can provide, or use a warmer base layer coupled with a windproof or waterproof jacket for maximum protection. This versatility extends the jersey’s use well into three seasons, making it a useful wardrobe staple. Two weights of fabric balance insulation and breathability, with the lighter option employed at the sides and lower sleeves. The slim cut keeps the jersey close-fitting in the riding position for both aerodynamics and more efficient heat retention, with the added benefit of making it easier to layer it under a jacket without feeling constricted.  The garment is practical too, with three open and one zipped pocket, full front zip and reflective details.