Size: Tall and skinny boys, listen up. I am 192 cm tall and weigh 79.4 kg. I bought XL. XL means wide. Sleeve length is ok, about 36.5" Cuff diameter isn't adjustable. Material: it's damn nice, not too heavy for summer, not too light for spring/fall. Snaps don't rattle and hold up. A bit fat brother, that is one hell of a shirt, but going down the next size will surely be too short.