Powerclaw Superior Latching System: Secure and reliable closure Indestructible and Lightweight NK-7 Resin: Durability without the bulk Water Resistant and Dustproof IP65 Rated: Protection against the elements Great for medium size gear, the NANUK 918 waterproof hard case is impenetrable and indestructible with a lightweight, tough NK-7 resin shell and its PowerClaw superior latching system. With NANUKs exclusive locking and latching system, your case stays shut and secured until you are ready to open it. The NANUK 918 organizes, protects, carries and survives in any condition, especially tough ones.