Liduo via Amazon offers the Lacdo 13.3" Laptop Sleeve in several colors (Gray pictured) for $11.99. Coupon code "8VW9GB6D" cuts that to $5.99. Plus, Prime members receive free shipping. That's tied with our April mention, $6 off list, and the lowest price we could find. While designed for MacBook Pros, it's compatible with a range of laptops and tablets. Deal ends August 31.