Eel Skin Basic Checkbook Cover. Made of genuine Eel Skin Leather. Eel skin leathers, called the "Silk of the Ocean", combine a colorful thin silky texture and durability. Eel is proven to be 1.5 times stronger than cowhide of the same thickness. The checkbook cover features two compartments for currency or receipts. Suitable for standard as well as side load checks. Measures just under 6.75 inches across and 3.25 inches high. A great looking item that will last. Available in elegant Black, Brown, Tan, Red, DK. Navy or Burgundy.