This golf headcovers set are made of high quality synthetic leather One set, all the same size for all Water-proof, oversize,it fits all standard iron clubs,not for hybrid irons Magic tape closure, not easy to drop from iron head 12pcs/set (3,4,5,6,7,8,9,P,A,S,L,L) Advantages: 1.Water-proof,Oversize ( so it also fit for narrow iron set ),Wedge 2.More thick to better protect your iron set 3.Velcro,never drop from iron head