These hats are crocheted in 100% wool from the Drops range of products. They will be comfortable on the head offering insulation as well as warmth against the elements. Size: They are sized according to crown measurement.  To check your size measure around the head just above the ears. Xsmall 16"  41cm Small 17"  44cm Medium 18"  46cm Large 19"  49cm Colours may vary according to different monitor settings. Hand crocheted by an Irish crafter  in Co. Louth , Ireland Care: Hand wash 30C. Do not Tumble dry