The XL Castelli Perfetto RoS Mens Convertible Jacket in Black is a versatile and high-performance piece of cycling apparel designed for winter sports. Made from 100% polyester with a polyester insulation material, this jacket is windproof and features a zip closure for easy on and off. With a sleek black colour and the iconic Castelli logo accent, this jacket is perfect for the avid cyclist looking for a stylish and functional garment that can withstand the cold and windy conditions of winter. Machine washable for easy care, this jacket is a must-have for any cycling enthusiast's wardrobe.