【New, Unused】 3-Person Inflatable Boat

I purchased this when I moved to an area prone to inland flooding, but I've never had the chance to use it and it's been stored in a storage unit (new, unopened).
Since it's made of rubber, I'd like to confirm if it's still usable, but I'm concerned it won't fit back into the cardboard box once inflated, so I will ship it as is.
In the unlikely event that it is found to be unusable due to deterioration, I will issue a refund.

・Purchase Date: July 2022
・Purchase Price: 13,890 yen
・Size: 230*130*36cm, suitable for 3 people.
・Load Capacity: 230kg.
・High Quality & Safety: Easy and quick inflation/deflation with a foot pump. Designed with safety as the top priority, using the highest grade industrial PVC material. Features a 4-chamber structure for exceptional durability and peace of mind. Suitable for use in aquatic environments such as the sea and lakes. Enjoy fishing to your heart's content!
・Portability: A small boat used for rowing or sailing. This portable boat fits easily into your car, making it perfect for outdoor adventures.
・Recommended: Comes with rod holders, making it ideal for fishing and leisure. It's also recommended as a water sports boat and is highly versatile for various activities!