Handmade by skilled craftsmen using American oak and 100 % vegetable tanned leather with a general thickness of 4 mm or more. Both leather and frame may exhibit markings consistent with hand craftsmanship. The surface of the leather, which is made in one single piece, is left as natural as possible to leave the leather susceptible for Patina. A rustic leather with some Imperfections must therefore be accepted. With time, light and use, the leather will gain depth and lustre as it ages. Due to the highly artisan process used and variation in the natural raw material, leather can vary significantly in colour between production batches. The oak wood frame will come with natural variations in drawings and colours.