The main material is made of an oiled cow -leather tanned with full vegetable tannins carefully selected from Europe from the long -established tanner "IL Ponte" founded in 1961. It expresses a soft touch and shade by ginning with paper and brushing finely. By using it, it is a smooth smooth tone, the oil contained in the leather increases the luster and depth, and can enjoy a unique aging. In addition, the interior attached leather is made of domestic tanned steer leather, which can be enjoyed over time as well as the main body material. * IL Ponte (Il Ponte) is a tanner that has been making high -quality leather with a traditional bucket method in the Tuscany region of Italy. He specializes in plant tannin tanning and has been a member of the Italian Plant Tannin Tanning Leather Association, and has also received GOLD certification in LWG (Leather Working Group).