Seibertron Pro Waterproof/Water Repellent Short Sleeve Lightweight Tactical Shirt Imported Note:Our clothes are not USA regular size, please choose the size by the left size chart image(the second picture).Durable, ultra-lightweight ,ripstop Teflon treated for stain, liquid and soil resistance,hidden document pockets,Pen pockets on left Chest HEIGHT,Regular 5.4"-5.11" 162cm-180cm clothing length(inch):XS26 1/2,S27 1/2,M28,L29 1/2,XL30 1/2,XXL31 body chest circumference(inch):XS(31-32 1/2"),S(32 1/2-34"),M(34-36"),L(36-38"),XL(38-40"),XXL(40-42") sleeve length(inch):XS17 1/2,S18,M19,L19 1/2,XL20 1/2, XXL21 1/2