Sun Mountain Bucket Hat: Hi I'm Wade Copeland with Sun Mountain outer wear, and this is the rain flex bucket hat. It is a water proof, breathable, 8 way stretch fabric. One of the lightest weight fabrics that we have in the golf industry. One size fits all, it has an adjustable inside elastic headband, on the inside it is also lined with a Wade Copeland liner. Also if you note, we have a rain flex tag on each side, so you can customize this or logo the front of the hat. This is the rain flex bucket hat.