Canvas Tote Bag

I want one of those thick canvas tote bags with no branding on it. Just the bag itself in natural cotton, stitching visible along the seams, handles long enough to sling over your shoulder without the bottom dragging. The canvas should be heavy enough to hold its shape when empty. Mine right now is some promotional thing from a career fair. The printed logo is cracking and the handles are too short. Every time I carry it to the farmer's market, I think about how the right bag with better proportions and a wider base would actually make me use it more.