For many purposes, I prefer these things to wheelbarrows - even to two-wheeled wheelbarrows. I have the smaller one.
Over the years, I have kept the wood waterproof because I store it outdoors.
Because they have narrow tires, they are not suitable for loads of rocks or heavy loads of dirt, but great for most outdoor purposes. At rural lodges etc. they are commonly used to bring luggage from boat docks, etc.
Carts Vermont