Ernie manufactures over 200 golf head and putter cover animal characters made of soft, durable faux fur. All covers have a protective inner lining. Putter covers feature open back with a velcro closing for easy on and off use. Head covers include a knit sock, 9 inches in length, which provides a protective cover for the shaft. In addition, head covers include the "LOCK" which keeps the head covers from falling off between use, and during play.