Woot offers Amazon Essentials Men Slim-Fit Short-Sleeve Poplin Shirt for $4.99 (Reg $20).  Free shipping for Prime Members.

Product Description:
Amazon Essentials is focused on creating affordable, high-quality, and long-lasting everyday clothing you can rely on. Our line of men's must-haves includes polo shirts, chino pants, classic-fit shorts, casual button-downs, and crew-neck tees. Our consistent sizing takes the guesswork out of shopping, and each piece is put to the test to maintain the highest standards in quality and comfort.

• SLIM FIT: Slim fit through the shoulders, chest, and waist.
• STRETCH POPLIN: Lightweight yet durable washed poplin with 2% stretch for comfort and mobility, a fabric for all seasons.
• EVERYDAY SHIRTING: With classic shirting details, this short sleeve poplin shirt is the perfect year-round wardrobe staple. Designed to be tucked in for a more polished look or untucked for a laid back yet sophisticated look. Versatile enough to be worn with jeans, chinos, or shorts.
• DETAILS: Spread collar construction, center front placket with button closure, and shirttail hem.