This is a genuine leather shakuhachi mouthpiece cap. Most shakuhachi mouthpiece caps are black and not very stylish, so I made this. How about a unique mouthpiece cap? At a concert, when someone asks "Whose cap is this?", you'll know it's yours right away. Please experience the texture of this genuine leather. ● Size: Height 5cm, Width approx. 4cm Fits bamboo circumferences of 111-115mm (see photo) ● Color: Navy ● Material: Outer: Cowhide Inner: Pigskin This is a handmade item by an amateur, so there may be some uneven stitching. Each one is made by hand. Thank you for your understanding.