Barbour size medium 40102cm reg length sage green casualcountry border treated cotton jacket measurements 40 chest size armpit to armpit 44 equals a 4 chest tolerance 23 outside sleeve length 35 length from nape to hem material hard wearing medium weight sylkoil thorn proof and waterproof treated when new cotton at least 85 material outer shell warm barbour tartan check cotton 100 lining drip strip nylon 100 inner lining features two way