Coin pocket on the front. Interior seams piped with shirt fabric. Buttons are made of real corozo. 71% cotton 21% wool 7% polyamide 1% elastane. Woven by the italian mill franco marcora.Our buttons are in 100% corozo made from a nut from ecuador. Corozo is a natural product with is similar in consistency to a hard resin. It is often referred to as "vegetable ivory". At a microscopic level, corizo is made up of very tightly wound organic fibers with it give excellent durability and scratch resistance.