The transformation of the skin and coat of animals is one of the oldest artisanal arts. Leather is used in many different ways and has proven itself over thousands of years to be a durable, hard-wearing material for furniture and upholstery as well as for shoes and accessories in the clothing industry. Every piece of leather is unique because both, the type of skin and the form and size can be very different depending on the type of animal concerned. The production method used, also gives every piece of leather its own characteristics. On the following pages, we will show you the special particularities which the technical sewing process gives to leather and provide you focused recommendations that have to be taken into account when sewing leather.