The new RC4 The CURV 105 is a customizable, high-performance VACUUM boot with a lightweight shell and standard width fit. A warm, thermorformable, 3D pre-shaped, Primaloft liner enhances the fit and comfort. GripWalk adds security, comfort and convenience.Specifications: - Stiffness: 105- Last: 91 Mm- Weight: 1890 GTechnology:SOMATEC:- The natural V-position enables skiers to control their skis with absolute precision.Connected Fit:- Anatomic last with excellent 1st fit and unique matched Liner and shellPrecision Steering:- 3D-Cuff and new - based on FE-Analysis - forefoot geometry