When Tao Geoghegan Hart was spotted with a prototype of this technical garment on the Stelvio before his victory at the 2020 Giro d’Italia, the question “what is this?!” was raised on many social media platforms. The weather conditions during this stage are a good indication of when this garment is at its best. It provides surprising warmth while wicking moisture away from your body, keeping you warm but without the risk of overheating thanks to its mesh construction. It’s ideal for wearing under a jersey if you’re doing high-intensity training or layered under a jacket.