These apparently normal leather or cloth
pouches are found in groups of 3-6 (1d4 + 2)
attached to a belt.

Each pouch can hold 100 gp (or ten pounds weight) as if it were but 1 gp (or a tenth of a pound).
However, nothing larger than 1 x 2 x 3 inches can fit into a pocket, and
the maximum cubic volume  capacity for a pocket is 3 x 6 x 12 inches.
(Thus, vials of holy water would easily fit,
but a dagger or wand would not, in most
cases.)