This is less an item you need, and more an item you get for insurance. I was using a wireless pack in a punk band and it could get a bit crazy so haveing the bag on the transmitter just gave me the extra protection if there was a drink spilled on me or something like that. Not a vital product but a nifty one.
This is a little pouch to suit a Sennheiser Evolution beltpack transmitter or receiver (G2 or G3 versions). It has a slot in the back for the belt clip and a Velcro opening. It's useful to keep the beltpack safe from scratching etc, and is very reasonably priced. Note that you can't access the controls or batteries when the beltpack is in the pouch, so you'd only want to use it in situations where the extra protection is really needed.
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