This slouch hat has been crocheted using several different colors and types of yarns. It has quite a bit of slouch, and a nice snug band with very little stretch. The brim of this hat will fit a 19 to 20 inch head. The measurement from brim to back of hat is 10 inches. Because this has been crocheted using both wool and acrylic yarn, it should be hand washed and laid flat to dry. Please do not wring or twist as this will cause the hat to felt. All of my items are made in my smoke free home. I do have a guinea pig, but she doesn't crawl all over my yarn! If you are outside the US please contact me for a shipping quote.