Northbound Train Super-Tough Headlamp Hard Case, Ultra-Light Adaptable: fits all northbound train models - plus many from petzl, Princeton tec, GRDE and others Indestructible: tough, water-resistant shell protects your headlamp from impact and elements Functional: heavy-duty nylon zipper, interior web pockets for extra batteries and carabiner clip Flexible: buy an extra for other gear