Columbia offers its Greater Rewards members the Columbia Men's PFG Bonehead II Hat in several colors (Fossil/Fly pictured) for $11.92 with free shipping. (You must be signed in to see this price. Not a member? It's free to sign up.) That's the lowest price we could find by $8. It's available in one size fits most. Deal ends February 17.
There are lots of things Uncle Sam can't touch — so long as you play by the rules.