This is a hand-stitched genuine leather notebook cover for a surveying notebook (Yacho) size. It can hold one Yacho notebook. It has a pen lock-style pen holder that prevents the cover from opening once a pen is inserted. The pen lock section has been made wider to accommodate multi-function pens. In the photo, a uniball one is inserted, but pens up to the thickness of a Jetstream 4&1 can be used. Black chrome-tanned leather from Nippi is used for the interior and exterior, and orange polyester thread is used for the stitching. Because it is chrome-tanned leather, edge and flesh side finishing have been omitted, making it more affordable. The surveying notebook and pen in the photo are not included. *This item is also listed on other sites. Please note that we may cancel your order if it sells out quickly on another site.