This is a set of underwear that is perfect for fall, winter, and spring. I used to have my baby wear a short-sleeved undershirt with a combination undershirt over it ^^ Uniqlo underwear is durable even after many washes, so I think it can still be used. [Combination Undershirts: 6 pieces] 4 pieces are made by Uniqlo 2 pieces are from Aeon The Uniqlo star-patterned one has some yellowing around the neck. Please check the photos. [Short-sleeved Undershirts: 5 pieces] All 5 pieces are made by Uniqlo I have selected items without major stains or dirt to list, but I would appreciate it if you could understand that these are used items before purchasing. Thank you for looking.