From the Manufacturer:
The perfect solution for carrying one pro-sized body (lens detached) or two smaller telephoto lenses on any Think Tank Photo belt or belt pack. Accommodates one pro-sized body (lens detached) or two smaller telephoto lenses with hoods in position.
The included dividers allow you to arrange the bag for carrying various gear configurations. The front zippered pocket provides space for a lens cap or other accessories. Every modular component can be locked on a belt to keep bag in place on any of our camera belts.
Components can "Rotate or Lock" on the belt. To rotate, place the white plastic tang behind the belt while attaching the component. Rotating the component prevents the weight of the equipment from creating a pressure point on the hip by being stationary for an extended time. Also, moving the component to a different place on the belt allows a photographer to assume a different position such as kneeling, bracing against a wall, or lying prone without damaging gear. If locking the component in position is preferred, slide the plastic tang down into the fabric loop on the belt or rail while attaching the component. This prevents the component from sliding along the belt.
Every skin component bag has a sound-silencer built in. The "Sound Silencer" underneath the front flap eliminates hook-and-loop tearing noises. During weddings and some concerts, for example, loud noises may be frowned upon but a photographer still needs to access gear. The Sound Silencer still allows the flap to cover the top of the bag but prevents the hook-and-loop from contacting, to eliminate noise.
Includes a seam sealed rain cover which is stored in a zippered pocket at the bottom of the pouch. When not using the rain cover, this pocket can be used to store a small accessory. Attaches to all Think Tank Photo belts and belt packs.