Every Studio 440 bag is slow made to ensure the heirloom quality of traditional craftsmanship. Each item is hand cut, hand punched, hand stitched, and hand finished. We use only the highest quality vegetable tanned leather that has been tanned in America for the last 150 years. Vegetable tanned leather is free from harsh chemicals. The process utilizes natural tannins from tree bark and can take anywhere from two weeks to two months to complete. The leather is extremely durable and will patina beautifully with use. Each item is made to order and can be completely customized by you! The end result is a bag as unique as the wearer, made to be passed down for generations.