The Zia Plus has a toggle that lets you switch between the original Zia (very low or no compression) and the two settings of the Mucho Boosto (low and high compression).

Please feel free to ask any questions or request additional photos before buying, since all my items are final sale unless I have made a mistake in the description. I mean this sincerely, just send me a message and I will respond promptly. And watch my other listings and add my shop to your feed, I have way too much gear and I’m not getting any younger, so I will be selling a lot of rare pieces over the next few months. Thanks!