Mackie SRM450 / C300z Bag SRM450 / C300z Bag Protect and easily transport your Mackie SRM450v2 or C300z loudspeakers with this heavy-duty, durable padded bag complete with a sturdy, padded shoulder strap Features a handy outer pocket for accessories Protect and easily transport your Mackie SRM450v2 or C300z loudspeakers