Vintage head-layer genuine cowhide leather, stitched with care for a book that will last. The strap is personalized with a hand-stitched golden cow pattern and a magnetic closure to secure it. The outside of the strap is slotted for pens. size standard:13cm*18cm A5:15cm*21cm ===== Shipping: This is a handmade work, and it usually takes us 10 days to make the order. Thank you very much for your patience, please contact me if you have any questions. We will make your order as soon as possible and promise to ship it the first time.