Century 21 offers the adidas Diablo Small Duffel Bag in several colors (Black/Green pictured) for $10.99. Coupon code "FREESHIP10" bags free shipping. That's the lowest price we could find by $9. It features a top zip closure and adjustable shoulder strap.
Century 21 also offers the adidas Diablo Medium Duffel Bag in Grey/Orange or Blue/Black for $19.99 with free shipping via the above coupon. That's the lowest price we could find $8.