Update: Deal over.

AmazonBasics Premium Backpack – Link

As part of its Prime Day deal, Amazon has this on sale for only $12.19!

• Lightweight yet durable multi-compartment backpack – ideal for work, travel, or school
• Fits most 15-inch laptops; separate padded laptop compartment with top velcro strap to keep laptop in place
• Front pocket organizer with eight sections for keys, pens/pencils, a cell phone, and more
• Padded shoulder straps and back padding offer extra back support and comfort; top loop handle for a secure hold when picking up or moving the backpack
• Front carabiner clip; external water-bottle pouches; secure strap for sunglasses
• Capacity: 1626 cubic inches/ 26.6  liters