HEMPZOO long sleeve armors are designed in California with comfort, durability and a natural body armor in mind. They feel soft and silky smooth, have a casual fit, longer cut with reinforced stitching. They have the performance of a synthetic yet they are natural. 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. HZ Hemp T-shirts wear in not out! The more you wash and wear them the softer they become for you to enjoy for years to come. A natural planet friendly product that goes back to the earth when your done with it.