This is a brand new pajama/lounge set.  
I had to break the seal and open the package just to see what it was.

From Freeye:

  • 【Ultra-Soft & Stretchy Material】Experience ultimate comfort with our lightweight, stretchy ribbed knit fabric. Perfect for lounging, sleeping, or even postpartum wear.
  • 【Stylish & Versatile Design】The 2 piece pajama set features a trendy ribbed knit design, batwing sleeve, crew neck, and high waist bike shorts. Dress it up or down for any occasion.
  • 【Adjustable Waist】The matching shorts feature a soft elastic waist with drawstring for adjustable comfort, and two pockets for convenience.
  • 【Perfect for Any Occasion】The wrinkle-resistant material makes this set perfect for home, travel, or even working out. Stay stylish and comfortable wherever you go.