Qiker via Amazon offers the XIXOV Water Resistant 17" Laptop Backpack in Gray for $19.99. Coupon code "IRYIEITC" drops it to $17.99. With free shipping for Prime members, that's $12 off the previous sale price and tied with last week's mention as the lowest price we've seen. It features a USB charger, adjustable shoulder straps, and storage for laptops with screens up to 17". Deal ends February 28.