The Rock Bag by Cole-TAC is the great addition to your tripod.  Made from durable 1000D Cordura fabric it can store gear off of the ground.  The Rock Bag can also be used to weigh down your tripod to keep it stable in windy condition with either the bag itself or the integrated loop.  Included are three QD swivels and QD Thingy for fast and easy removal. This is made here in the USA and backed by our lifetime warranty, you can purchase yours today.