This new style Audio Mixer Combination Case is a protective carrying case, custom-fit to the Sound Devices 664 mixer. This new MXC bag combines both the mixer and receiver compartments to form one ridged structural design. The new style of MXC provides a much stronger frame and offers much improved support. The bag has two large pockets either side, perfect for an NP1 type battery or left and right transmitter sends. Located within these pockets there are also additional transmitter attachment points. The bag has a movable Velcro loop strap/shelf that can be positioned to utilize the space under the CL6. This Velcro loop provides a strong anchor point for an additional NP1 type battery which is often required with a fully equipped bag. Extra storage space has been created within the double layered Vinyl window. This allows the user to store some small convenient items or frequency chart information. The MXC-664CLX can also be used without the CL6 attached. The bag is designed to allow the user to compress the outer section of the bag and create a smaller and more compact case. Main Compartment: 4.5 x 7.5 x 11.0"" (11.4 x 19.1 x 27.9 cm) Wireless Receiver Compartment: 4.0 x 7.5 x 11.0"" (10.2 x 19.1 x 27.9 cm)