SIZING INFO | RJC | Kalaheo Label | Men | Rayon | rayon shirts are made bigger than the cotton shirts >>SHIRT CHEST - [S] 47" [M] 50" [L] 53" [XL] 57" [2X] 61" [3X] 65" [4X] 69" >> SHIRT LENGTH - [S] 28 1/4 " [M] 29 1/8" [L] 30" [XL] 30 7/8" [2X] 31 3/4" [3X] 32 5/8" [4X] 33 1/2" >> SHIRT SHOULDER - [S] 19 3/4" [M] 20 1/2" [L] 21 1/4" [XL] 22 1/4" [2X] 23 1/4" [3X] 24 1/4" [4X] 25 1/4" >> SHIRT SLEEVE LENGTH - [S] 10" [M] 10 3/8" [L] 10 3/4" [XL] 11 1/8" [2X] 11 1/2" [3X] 11 7/8" [4X] 12 1/4" >> CLOTHING CARE | for best results (rayon) - hand wash cold | mild soap | line dry | cool iron | please contact us if you need sizing assistance. Mahalo!