Hzcx Fashion Men's Short Sleeve Cotton Blends Linen Shirts Pullover Blouse Pls choose the size as your US SIZE,you wear US M,according to your body,if you wear US M is loose,so pls choose our US M(chest 38"),if you wear US M is not loose or slim,fit,so pls choose US M(chest 40"). we will ship it to you within 2-3days,and it just needs 7-14days to delivery,so it is faster than amazon expected date. we support to return no reason within 7days,we have warehouse at usa,so you just need to return it to our usa warehouse and don't need to return it back to china. hand or machine wash are ok,treat it as your normal clothing,the fabric is cotton blends linen,no pilling,no fading men's casual informal shirts,slim fit,the style is pullover,short sleeve,stand collar,slim pattern