As one of its daily deals, PricePlunge offers the Aerovation 15.4" TSA Checkpoint-Friendly Laptop Sleeve, model no. CPFS-1A, for $3.99 plus $2.49 for shipping. That's the lowest total price we could find by $8. This case meets TSA requirements for X-ray screening. It's compatible with laptops with screens up to 15.4" and fits into Aerovation laptop bags. Deal ends today.