If you're in a thrifty mode, your best bet is this Piero Guidi Carryall. It's a popular product, while not very pricey. Another savvy option is this Fossil Duffle Bag. While the price is not too high, be sure that this piece will become a worthy addition to your wardrobe. Or you can choose this Bric's Holdall - be sure you'll be making a stylish addition to your wardrobe.
If you're a bargain hunter, look no further than this L.a.p.a. Duffel Bag. This item doesn't cost a fortune, but absolutely deserves a spot in your wardrobe. You might also want to look at this Buti Carryall. It's an attractive option both price and quality-wise.
If you're in a Treat Yo' Self mood, then you won't be disappointed if you check out this The Bridge Duffel Bag. It's an expensive but smart option.