FitdomFitdom Drawstring Backpack with Shoe Compartment Large Black Gym Sports String Cinch Backpack Athletic Sackpack

Just recently recieved this sackpack, and there was a piece of cardboard attached to the top saying "hand wash before first use". Anyone do that?

Does a size 7 basketball fit in this bag?

Would a set of bocce balls fit easily?

Are the straps adjustable?