HEMPZOO hemp button up work long sleeve armors are designed in California with comfort, durability and a natural body armor in mind. These hemp button up shirts have a tailored slim fit & longer cut with two nice chest pockets. We recommend sizing up one size for a more standard button up fit. They keep you cool in the summer and warm in the winter. The durable, strong and porous micro hemp fiber structure allows natural breathability and absorbency to quickly wick away moisture from your skin and airflow dries the remainder to help balance body moisture. The more you wash and wear them the softer they become for you to enjoy for years to come. Naturally good for you and our planet.