I purchased the field notes cover in natural vegetable tanned leather. The field note insert fits perfectly. The leather is top notch and I love the natural markings that were a result of the “donors ” daily life. The saddle stitching is impeccable, as are the burnished edges. Overall, an excellent product and the work of a true craftsman. Josh was very patient in addressing my numerous questions and also very accommodating to a few modifications that I requested. I would not hesitate to recommend any product from Brosius Brother’s and I am sure this will not be my last purchase.” – RD