Right now, Nike is selling Nike Sportswear Men's Tanks for as low as $18. That's 40% off the original retail price of $30.

From sweatpants to hoodies, Mack Weldon offers the sleekest and comfiest styles for lounging at home in the cold months. But ...

Case in point: Nick Kyrgios and Grigor Dimitrov, each in Nike slim-fit tanks at the Australian Open ... It looks like a practice top. Check back soon for No. 4.