Strobel construction offers flexibility and comfort. Synthetic leather and mesh uppers for style and comfort. Lycra®/Neoprene collar for increased padding. Hook and loop closure system for an adjustable and secure fit. Removable perforated footbed with Etc® Anti-Friction, for increased comfort and support. Lining treated with antimicrobial solution keeping your feet cool and dry. Merrell Air Cushion in the heel absorbs shock and adds stability. Water friendly non-marking sipped sole. Vibram® WaterPro Plus Sole/TC5+ Rubber is durable and shock absorbent.