Men Shoes Dark Blue Leather Nubuck. This ultra-lightweight, perforated slip-on will take you through the summer. The SHOCK-ABSORBER, in the outsole, and the detachable insole, with integrated SOFT-AIR Technology, help to minimise impact, whilst ensuring a healthy climate inside the shoe. Slip-on with elasticated inserts at the top of the foot for perfect support. Its leather lining promotes a healthy climate inside the shoe.