Horizontal flip case for Walkman NW-A16/A17/A25/A26/A27 (with signs of wear) - White

Although it was completely unopened, I was concerned about age-related deterioration as it was the last item in stock, so I opened it.
There are stains as shown in the image due to discoloration of the adhesive.
There seem to be no functional issues.
Please purchase with your understanding.

This is a Steayer horizontal flip case, model ST-CW15AL, for the SONY Walkman NW-A10 and NW-A20 series.
The color is white.
As it was a long-term store inventory item, the box has dirt and sticker residue.
It was likely manufactured around 2015.

Features:
- Made with high-quality synthetic leather
- Easy to attach and remove
- Includes LCD protective film and cleaning cloth

Compatible models:
SONY Walkman
NW-A16/NW-A17/NW-A25/NW-A26/NW-A27

Shipping:
The box is 28mm thick, so it will be simply packaged in plastic wrap without bubble wrap.