SIZING INFO | RJC | Men | Reverse 2-piece Collar Style | SIZING FACT - this sizing info for RJC shirt is intended for reference only, measurements can vary between shirts | SIZING TIPS (1) this shirt runs small for some people; more tailored and fitted style (slimmer going down the body) (2) please measure a shirt that fits you comfortably and order according to our shirt measurements here >> SHIRT CHEST - (S) 45" (M) 48" (L) 51.5" (XL) 55" (2X) 61" (3X) 63" (4X) 66" >> SHIRT LENGTH - (S) 29" (M) 30" (L) 31" (XL) 32" (2X) 33" (3X) 35" (4X) 36" >> SHIRT NECK - (S) 15.5" (M) 16.5" (L) 17.5" (XL) 18.5" (2X) 19" (3X) 20" (4X) 21" >> SHIRT SHOULDER - (S) 18.5" (M) 19.5" (L) 20" (XL) 21" (2X) 22.5" (3X) 23.5" (4X) 24.5" | CLOTHING CARE - for best results (cotton) - machine wash cold | gentle cycle | mild soap | line dry | cool iron | measurements of handmade apparel slightly different from shirt to shirt | please contact us if you need sizing assistance. Mahalo!