This classic hand knit beanie hat is made of 100% alpaca yarn, natural color-not dyed. The hat can be worn as a slouchy if not doubled up at the bottom. It has a lot of stretch and measures approximately 20" around the bottom when it is not stretched; and measures 25" around when fully stretched. The hat measures 10 inches in length. The alpaca fiber is luxurious, hypoallergenic, light weight, super soft, and breathes while being worn. It is warmer than wool. Hand wash in mild detergent and lay flat to dry.