Vintage plaid sports coat blazer

Vintage 80's red and blue plaid blazer with 5 pockets and two button closure. Tag reads La Mar Clothes Designed for Shaddan's Men's Stores. Material seems like cotton. Measurements Shoulder to Shoulder: 19.5" Shoulder to Cuff: 25" Pit to Cuff: 1.25" Chest: 42" Waist: 41" Length: 31" Chest Pocket: 4" x 5.5" Front Waist Pockets: 6" x 6" Inside Pockets: 5" x 5.5"