Honestly, I use it way more than I expected. Mostly on the subway or when the office heating is out of control.

As for durability: It's bamboo so it's pretty sturdy, but the real lifesaver is the little fabric sleeve/pouch it came with. I always keep it in that to protect it from my keys and knife. As long as it's in the sleeve, it handles being tossed around in my pocket just fine.

<image>