This Marks & Spencer Sports Blazer Jacket is a slim fit, navy blue jacket made from a cotton blend material with a touch of elastane for stretch. It features a classic design with a single-breasted front and a notch lapel, perfect for formal occasions. The jacket has a regular length with a single vented back and four-button sleeve detail, giving it a tuxedo style look. The polyester lining ensures high-quality construction, and the two-button front adds a sophisticated touch to this stylish blazer.