Cast Cover, Waterproof, Adult, Unisex, Left/Right Foot, For Bathing, Cast

My son was hospitalized with a fracture and told he would need a cast, so I purchased this thinking it would be necessary after his discharge. However, it turned out to be for a large cast/splint, so it was never used.
I have discarded the box and instruction manual, so only the waterproof cover is included.
It was left in a corner of the room for a short period and became dusty, but it has been disinfected and stored in a ziplock bag.
Please only purchase if you understand the product description.

[Japanese Brand]
The waterproof vinyl part has been inspected in Japan and reliably protects casts and bandages from moisture.
With its waterproof and Japanese brand design, this cast cover prevents water from getting on your cast during showers.

[Attachment Design Based on Physical Therapist's Opinion]
The opening is made of silicone, which can be widened by hand to easily slip your foot through, and is designed for smooth removal. This waterproof cover allows for comfortable showering and bathing even while a cast is in place.

[Waterproof Silicone Material for Clean Use]
The opening uses high-quality, stretchy silicone material. It is resistant to water, dirt, and mold, and this waterproof cover reliably protects casts and bandages for clean use during showers.

[Water and Dirt Resistant Silicone Material]
The highly sealed waterproof structure prevents water from entering, reliably protecting casts and bandages during showers. It adheres snugly to prevent slipping, and the high-quality silicone is resistant to mold and dirt, maintaining cleanliness.

[Available in 3 Sizes - Left/Right and Unisex]
The cast cover is available in 3 sizes and is unisex for adults. It is waterproof and compatible with legs wrapped in casts or bandages. *Cannot be used if the circumference of the leg with the cast or plaster is 11-12cm or larger.