Arc'teryx Beta Jacket ARC’TERYX BETA JACKET men’s Yukon, Size XS New, Unused Purchased from an authorized retailer about 2 years ago, but I never used it because I didn't want to get it dirty in the mountains. The Bird Aid is missing due to moving, so I cannot include it. Returns are not accepted to prevent product switching. Please consider this before purchasing. I measured the size. Measurements are based on the seams, but please consider them as a guide since they are amateur measurements. Width: 52cm (armpit to armpit) Length (front): 57cm (from the base of the neck to the hem) Length (back): 70cm (from the base of the neck to the hem) Sleeve Length: 62cm (from the shoulder seam to the cuff) Shoulder Width: 46cm (from shoulder seam to shoulder seam)