Brand new Size: Medium P2P: 21.5/22” Nylon Lovely lightweight jacket for summer No offers The Belstaff Service Fieldmaster Jacket in black, medium size, is a stylish and functional piece for casual occasions. Made from durable nylon outer shell material with polyester insulation, this windbreaker jacket provides warmth with a 500 weight rating, making it perfect for springtime activities like walking. This classic Belstaff model offers a sleek design with a regular fit, perfect for the modern man looking for both style and practicality in their outerwear.