Men's shoes sizes 10-13, pants too (Columbia Heights)

I am a social worker at a residential hospital. Gentlemen on many of the units could use some shoes -- preferably slip-on shoes. Laces will need to be removed from athletic shoes but we can provide the elastic things to replace laces. No hard sole shoes or heavy boots.
One charming but hard-to-please guy needs 30x32 pants. Thanks!!!

Another charming guy needs much larger pants: 42x32.

Much obliged!