AURALEE Super Fine Tropical Wool Open Collar Half Sleeved Shirt - TOP LIGHT BROWNTropical wool fabric which exclusively uses Super 130s worsted wool marl yarn, and combines a crisp, cool feel with smoothness, creating an ideal tailoring choice even for the hottest days of summer. Relaxed fit WOOL 100% A: Length. Length measured from the back collar to the hem. B: Shoulder width. The straight line measurement from shoulder tip to shoulder tip. C: Body width. Width measured between the bottom of the sleeves. D: Sleeve length.