Skull and Rose Putter Headcover for High-MOI Mallet Putter, White. Cover Heel Shaft big size High-MOI mallet putters. Our unique designed headcovers are made with high quality of material, embroidering and stitching. Ultra thick 3-layers (PU leather top, sponge sheet intermediate-layer and velvet lining) cover provides the best way to protect your valuable golf club heads