I subscribed to Spiffy Socks because I was curious on how bamboo fabric would feel. I received my first pair (Puzzle sock, I believe) a few weeks ago and it's pretty soft! I can actually tell the difference and just last week I ended up buying a bamboo towel at the mall. It's a bamboo-revolution for me, haha! Only wish that they offered more pairs each month instead of a single pair each month.