A gravel cycling shoes with BOA® Fit System design for an enveloping fit and a X4 outsole targeted stiffness and rubber tread for mixed surfacesFeature: Closure system BOA L6-Steel cord closure system, nylon guides and a mechanical reel designed to address the long list of deficiencies found in traditional closures. It´s a perfect fit with the simple twist, free from the stretch, weight and inconvenience of old-fashioned closures. X4 OUTSOLE: - For these versatile shoes we developed a specific outsole, the X4: a carefully considered combination of stiffness and comfort, to turn pedals effectively on mixed surfaces, blending nylon - with targeted stiffness - and a rubber tread for effective grip and durability.Specifications:- Weight: 292g (size 42- 1/2 pair)