Castelli Alpha Ultimate Insulated Women Cycling Jacket Merlin Cycles Castelli Cycling Jacket Castelli Solo Start Designing Castelli Cycling Castelli Squadra Stretch Womens Cycling Jacket Merlin Cycles. This is a men's Castelli cycling jacket, designed for dedicated cyclists who demand high performance. The jacket is predominantly red with large branding on the front and sleeves. It features a full front zip for easy ventilation and comfortable fit during rides. Made from durable materials, the jacket is ideal for variable weather conditions. It has been used but is still in good condition, providing both function and style on every cycling adventure.