Amazon Big Winter Sale is here and the deals are not going away! You're probably wearing some form of loungewear as you're reading this — why not stock up on more cozy pieces? And the best part? So many styles are on sale on Amazon. So what exactly constitutes loungewear? Leggings, of course, plus pajama sets and other sleepwear, sweatpants, shorts with a drawstring waist or elastic waist, boyfriend-style tops, robes, athleisure pieces — basically anything in a soft, comfy fabric.