My husband was on a walker for some years. I made him a
masculine walker bag from denim (found in yard sales, old
jeans) and it turned out well. I also put in a pocket with a
zipper AND a velcro attachment, since for some time he
loved to go to flea markets. And older people are far more
subject to theft of wallets, and have limited feeling in body
parts. So the zipper/velcro pocket had two LARGE inner
pockets for cash and change, with the bigger bills being
carried in the bottom of the change pocket. He never did
have any thefts.