The performance of this model, which includes a very light weight and breathable microfiber, has been further improved by the use of technical devices such as the Boaź L6 double fastening system with nylon coated steel lace. The simple micro-metric closing system can be easily adjusted, assuring secure fastening in every part of the foot. The high profile of the heel cup has been realized by an high density TPU heel and the application of a soft, breathable lining. The shoe tongue material has been designed to give superior comfort to the top of the foot. Finally, little laser made holes let your foot breath and stay cooler in hot weather conditions.