The Wheelchair Side Bag is made a light-weight water-repellent nylon material.
You can attached it to either side of a wheelchair.
It has a large section fitted with a draw cord. The bag is big enough to hold a drink bottle, sandwiches, etc. There is a separate outside pocket to hold such items as a wallet, tissues, reading glasses etc.
You can hold a urinal bottle upright. This is a discreet way of carrying a urinal bottle so that no one can see it.