Poolside Button Up Short Sleeve Shirt. The Poolside Button-Up SS Shirt is made for easy days when the only plan is to keep it light. Whether you're kicking back at home or posted up somewhere warm with a cold drink, it brings a clean look without trying too hard. Built with a lightweight cotton blend and a modern fit, it moves easy and stays comfortable all day. Finished with an all-over print, custom buttons, and subtle details, it's the kind of shirt that goes wherever the day takes you. 98% cotton / 2% spandex poplin construction. Lightweight feel with slight stretch for comfort. Modern fit short sleeve button-up design. All-over print graphic. Custom Fasthouse buttons. Left chest pocket. Woven label on wearer's left hem.