60% Wool 25% Polyester 15% Viscose Centre Back Vent Charcoal Classic Fit (L) fits 42"-44 Chest (M) fits 38"-40" Chest (S) fits 36"-38" Chest Three Button Hidden Fastening Wool Blend (XL) fits 46"-48" Chest (XS) Fits 34"-36" Chest (XXL) fits 48"-50" Chest (XXXL) fits 52"-54" Chest