Lightweight and fits with a band around your head. The band is stitched into the hat. The material of the hat itself is made of backpacking foam material, so its soft but still maintains shape.

Mine sadly got stuffed in a mailbox by my postal worker, so it took a few days to lose the crease it had formed... however its a very interesting hat and I think it will have use here in Florida when kayaking and boating.

I haven't tried yet backpacking yet but it should work okay without hitting the top of my backpack.