The collar boa is removable. COOPER SPORTS WEAR Cooper / Collar Mouton TYPE A-2 Leather Flight Jacket 42 / Genuine Leather Insulated Blouson / Cowhide / G-1 / Brown / Men's. [Size] 42 [Flat Measurements] (Please consider errors due to measurement methods. Please consider as a reference.) Length: 64cm, Width: 58cm, Sleeve Length: 64cm, Shoulder Width: 50cm [Color] Brown [Material] Outer: Cowhide, Lining: Acetate Satin 100%, Filling: Polyester 100% [Condition] USED. There is a familiar feeling of use (stains, leather-specific scuffs, fading) due to wear. There are no particularly noticeable damages such as tears. * We pay close attention to condition confirmation and description, but please refrain from purchasing USED items if you do not understand them or if you are sensitive to details.