Boxed Asian Pajama Set, any idea of the age?

[regan]

Hi all! This set was purchased a antique store. Inside the box includes a top, bottoms and slippers. The material feels like a synthetic satin and the slippers have fur. I found similar examples on the internet claiming they are 50s and that they were gifts sent home from the Korean War. Any other opinions or knowledge of this type of item?

 

[regan]

I added a couple more images of the pajamas. The elastic came out on one side, needs to be replaced. Are these pajamas really be 1950s or later?