Nappa leather is a premium material, and contains natural oils to keep it soft and pliable. Accordingly, a minimal break-in time is needed. However, there are a few tips to support a break-in period if needed.  Wear brand new shoes for short periods at first. This could include wearing around the house for an hour or two Wear thick socks during the initial break-in period Avoid using excess heat such as a hair dryer, as this can dry out the natural oils contained in leather, risking cracking or discoloration