Material: Polyester *Button closure *70% Polyester 30% Cotton: these Hawaiian Short Sleeve Shirts were made from a breathable construction that's lightweight and comfortable. The soft cotton and polyester fabric also holds up in the wash and easy to remove wrinkles with just a spray of water. Please washed for maximum softness. *NOT shrunk after washed: The shirt will not shrink after washing with polyester, please rest assured to buy *About Shirts : regular fit, lightweight,button-down closure all over printing shirt featuring spread collar and short sleeve.