The problem with some utility panniers is that they look so... utilitarian. This canvas pannier has a more classic look, and a 750 cubic-inch capacity. Bring this pannier it right into the store or buy a pair and use them for an overnight tour.
Tapered bottom corners provide better heel clearance than grocery panniers designed to hold flat-bottom grocery bags.
Minnehaha bags are inspired by classic bags of the past, but on the inside is decidedly non-retro high-density polyethylene to keep the bag from sagging.
Grocery panniers by Banjo Brothers designed for grocery bags:
Banjo Brothers Folding Grocery Bag Pannier
Banjo Brothers Minnehaha Grocery Pannier
Banjo Brothers Market Pannier