As one of its daily deals, Tanga.com offers this Camouflage Military Boonie Hat in four colors for free plus $4.99 for shipping. That's the lowest total price we could find by a buck; several stores charge closer to $10. It features a full brim, four screened side vents, button snap sides, and adjustable chin cord. Deal ends July 11 at 10 am ET.

BUY NOW: FREE + $5 s&h at Tanga