Kimono Undergarment T-shirt, Polyester, M, White

Selling because I haven't had the chance to wear it after purchasing.
It is unused, but has been stored at home for about 2 years, so please be aware if you are concerned about this.
There is no size indication, and it was a one-size-fits-all item, so I have listed it as M size for convenience.
There is no material indication, but it is polyester. The fabric is stretchy and can be worn simply by pulling it over your head like a T-shirt, with no need for dressing. The collar is tailored like a kimono's lapel. The collar gives a softer impression than those made of cotton.
Actual measurements (cm):
Length: 68, Shoulder width: 52, Sleeve length: 18, Body width: 58
Thank you for your consideration (⋆ᴗ͈ˬᴗ͈)”