I would say it is meant about the insulation and lining

Classic and elegant piece for effortless everyday wear

5 cmArmpit to armpit: 22 " / 56 cmShoulder to shoulder: 19 " / 48 cmSleeves: 13 " / 33 cmPANTS:Waist (unstretched): 12 " / 30

SIZE: Marked size 2XL

Vintage 70's Men Sheepskin Coat in Brown Size:M I would say it isSKU: D9080 Decade: 70's Material: Genuine sheepskin Colour: Brown Vintage condition level: 8 10. Showing some wear and natural fading around the edges, with slight bruising around the arm sleeves, cuffs, and hemline. The loose button has been repaired. SIZE: Estimated fit size M. To be sure the size will fit check the sizing details listed below. cm inches Length 81. 5 cm 32" Armpit to armpit 57 cm 22 1 2" Shoulder to shoulder 51 cm 20" Sleeve 66 cm