It's a common cycling experience: One minute you're cruising along with the sun on your back, warm as could be, and the next minute, the sun has retreated behind some clouds, you've climbed a thousand feet or so, and all you can feel are the wind gusts chilling you to the core. The Gore Bike Wear WS Short-Sleeve Women's Base Layer's WindStopper fabric will help you push through those hard-to-predict climate changes. Upon closer inspection, the WindStopper membrane in this base layer covers your front, shoulders, and kidneys. The rest of the layer is made of a polypropylene/elastane blend that wicks sweat away from your body and stretches with you. In terms of warmth, the WS Short-Sleeve Women's Base Layer lies between the WS Long-Sleeve Women's Base Layer and WS Sleeveless Women's Base Layer. The short-sleeve design covers critical heat-carrying arteries in your shoulders and upper arms, but gives you more planning flexibility than the long-sleeve version. After all, you can pocket arm warmers to use on your ride, if needed. The Gore Bike Wear WS Short-Sleeve Women's Base Layer has flatlock seams to reduce abrasion and an extra-long back. There's a reflective front logo at the base of the neck, which provides an added glint of visibility if you're riding with your jersey or jacket unzipped. The WS Short-Sleeve Women's Base Layer is tight-fitting and comes in sizes X-Small through XX-Large. You can choose Black or White.