Today only, as part of its Gold Box Deals of the Day, Amazon offers its Prime members up to 50% off select Calvin Klein Men’s dress shirts, pants, ties and more. Our top pick from this sale is the Liquid Cotton Polo Shirt in Blue for $22.49. That’s an Amazon all-time low and $16 off the regular rate. With over 220 reviews, this polo shirt is rated 4.5/5 stars and will be a go-to in your wardrobe. Find the rest of our top picks below.