The Cube is a transparant high impact polycarbonate case that encases the ATT Receiver perfectly. The flip top lid has a very securely locking clip mechanism that ensures that it will not simply come open when not required. The lid fits snugly to the main body and creates a waterproof seal. This means that if the Cube is dropped accidentally into the water, it will float and water will not enter the main compartment. On the reverse of the Cube is a removable belt clip which gives enough grip even on a pocket so that the receiver will not just fall off through moderate movement on the bank. On the front of the Cube, you can see a silver circle which allows the sound from the receiver to travel out of the Cube but also stops water from entering.