Unisex Organic Cotton Rip Stop Fabric with Hemp Contrast Pockets. European-style fit with Pan collar. Original design by SEEKER made in the USA.  *Order true to size | Model wears size Small MEASUREMENTS FLAT CHEST (PIT TO PIT): XXS/19.5" - XS / 20.5" - S / 21.5" - M / 22.5" - L / 23.5" - XL / 24.5"  SHOULDER: XXS/14.5" - XS / 15" - S / 16" - M / 17" - L / 18" - XL / 19" SLEEVE (PIT TO CUFF): XXS/18" -  XS / 19" - S / 20" - M / 21" - L / 22 - XL / 23" WAIST: XXS/20" -  XS / 21" - S / 22" - M / 23" - L / 24 - XL / 25"