【100% COTTON】Made from all-cotton fabric with a linen-like texture—lightweight, breathable, and comfortable. As the fabric is lightweight and breathable for summer，the white button down shirt may be a little see-through. 【US SIZE】Regular fit. Please refer to your usual size to buy. If you prefer a looser feel, consider sizing up. Please allow 0.4-0.8 inches measure error of size details due to manual measurement. Good workmanship; Due to limitations in photography and the inevitable differences in monitor settings, the colors shown in the photography may not correspond 100% to those in the items themselves; You will love it!