BEEJO?S Golf Club Headcover | Tie Dye Collection **Using a 7-step process, four different sewing machines to ensure the head-covers are strong, long lasting and perfect fit for clubs up to 460cc. We use a premium composite polyester-knit fabric and the interior is a 0.3? thick proprietary aerospace-grade foam. Our designs are printed and laminated onto the fabric. Then dyed, cut and hand sewn into a long-neck design that provides flexibility ensuring that the club heads are extra protected from nicks, irons clanging together and also breathable, dust-proof and waterproof to protect from the elements. It's like a glove for your irons as they slip on and off without much effort.