This is my second Kavu Chillba hat, my first one mysteriously disappeared by either; an envious soul, or a spouse that thought it looked ridiculous(she claims her innocence to this day and subsequently bought me this one).
I live on a lake, which makes this hat perfect when I am in my canoe. It floats, is waterproof, and keeps the sun off your face and neck. The mesh/vented "skullcap" headband thingy that keeps the hat secure on your head is brilliant. The simple conical design works well for coverage. The material is durable. The chin strap is nice for windy days or just letting it hang on your back when not wearing it.
I've also used this hat for mowing the grass on sunny days, gardening, backyard BBQ'ing with friends, and in the rain (its like wearing a small umbrella on your head! How cool is that!).
WARNING: conversation piece or odd looks guaranteed.