The Ollin NEXUS BASE SILICONE COVER gives your NEXUS BASE an extra level of protection from dirt and damage when not in use. Simply slip the durable silicone cover over your NEXUS BASE and have the piece of mind that your system is protected while you're on the move. Also included is a tether to keep the NEXUS BASE SILICONE COVER attached to your tripod when removed from the NEXUS BASE to keep it from getting lost.