Helly Hansen - Level 10 (Crazy Horse) - Lifestyle Departments: Whether sailing on calm seas or in heavy swell, the Level 10 is constructed for your needs. Water release perforations in the upper and mid-foot stabilizer and a full perforated, removable midsole for separate drying in extreme conditions. Storm Grip outsole made in superior non-marking gum rubber. PU midsole for cushioning and comfort. Anti-bacterial Microfiber midsole cover. Midfoot stabilizer for increased torsion. Heel stabilizer for comfort and protection. Anatomical tongue construction for superior comfort. Anatomically positioned forefoot flex grooves. Synthetic leather uppers for water resistance, including oiled leather version based on 125 years of Helly Hansen oiling technology. Microfiber and air mesh linings. Serdia by Clarion odor absorption sockliner cover.