6pm offers the New Balance Endurance Medium Duffel Bag in Black or Black/Navy, model no. NB-088, for $12.99 with free shipping. That's $5 below our mention from last spring and the lowest total price we've seen. (It's a current price low by $12.) This 19.5" x 10" x 9" polyester bag features an adjustable and removable shoulder strap, side zippered pocket, and zippered interior pocket.