Pacific Design PD0045 Action Pro Backpack for $12.97 after code CHAT5OFF5. Shipping is $7.00, so the total comes to $19.97 shipped. Here is a screenshot for your reference. Alternatively, it is also available here for $19.95 with shipping on orders over $25. This backpack is water resistant, rugged and ergonomic, and fits 15.4″ laptop. It usually sells for over $39.