22" Underarm to Underarm This is a Peter Millar men's blazer in size 42R, made of 100% wool in a blue plaid pattern. It features a two-button front closure, notch lapel, and double-vented back. The blazer is a classic 2-piece style with inner pockets and is suitable for various occasions like travel, parties, casual or business events. It is union-made in Canada, ideal for all seasons.