The Diversion Merino Wind Vest cycling vest has been designed by Mons Royale to protect you not only from the cold wind while riding but also to keep you warm. The sensitive areas of the chest, neck, and throat are covered with windproof Pertex Quantum panels. Inside, the cycling vest is lined with merino wool, which means it feels soft and comfortable against your skin and is less likely to absorb body odors. Since the Diversion Merino Wind Vest is primarily intended for biking, the back has been extended. What more could you want while cycling?.