We just added these awesome hats to our line. We found that mixing a strand of bamboo yarn with the hemp yarn creates a great hat! The extremely soft and fuzzy bamboo yarn fills in nicely with the hemp to create a thicker warmer hat for colder weather. These hats are the warmest option over the lightweight & midweight all hemp beanies. The bamboo yarn is just as earth friendly and has the same antibacterial properties as hemp yarn. Click the Style Guide to see some close up pictures of these hats.