I own four of these hats. I wear them daily as well as for backpacking. It really regulates heat well. With vented sides your head never gets hot, and the strip down the middle helps with the direct sun. The only reason I gave this hat a 4 vs. 5 is the adjustment strap buckle. This buckle unhooks too easily. I glued mine together, otherwise it comes unbuckled a lot when you take your hat off. This buckle is also too delicate for my liking. I had one break in the clothes dryer.