Oxa Fashion Amazon offers the Oxa 12" Canvas Messenger Bag in Black, Brown, or Grey for $19.99. Coupon code "UBV55QSG" drops it to $9.80. Plus, Prime members bag free shipping. (Non-members can spend $35 to bag free shipping; otherwise, it adds $8.93.) That's $20 off list and the lowest price we could find. It fits 12" laptops and features an adjustable strap, two side pockets, and three inner pockets.