This is a men's navy blue shirt is a size medium by the brand J. Crew in great condition ! lightly used. 96% cotton and 4% "other" Collar to bottom 28” inches Sleeve 33” inches Waist 20 ¾” inches Chest 21.5” inches Size Guide: Collar to Bottom: Back of garment collar (bottom stitching) to the very bottom of garment Sleeve: Center Back of bottom of collar, to end of sleeve) Waist (of shirt): Horizontal length of the most narrow part of shirt Chest: Horizontal Measurement of under armpit seam to under armpit seam