ReBalance Pro Acoustic Guitar Humidifier, Multi Purpose Stylish Stainless Feedback Suppressor and Moisture Sealing with High Density Sponge, Fits 99 To 102mm Soundhole (Black)

This was a gift and the exact name was requested. If you are looking - this is hard to beat!

Great item for this dry and cold climate. Fits into Zag 50 CE like it was made for it. Less expensive than the one Denny is selling on his website. Wish it also came with gel pack for when this Pennsylvania weather gets humid in summer time. Using first time today. Humidity in case this morning said 30% will see tomorrow what this little gadget has brought it up to. I think somewhere I saw people needed instructions. On the bottom of item it has arrows pointing to open or close. Fairly simple. Open item. Inside you will find a hard sponge soak with water a few moments squeeze it out soak again and put it inside item close lid. Place inside guitar sound hole. You are now humidifying your guitar. Keeping it from drying out and cracking. Wish I could give it 4.5 stars for not having a gel pack.

First off, why 4 stars. The sponge that came with my Pro model wasn’t Round! The two sides were cut off and it doesn’t fit completely in the unit. That being said it’s a 5 star product for doing what it supposed to do. As the picture of my ZAD900Ce shows the humidity is up from a starting 49% to 59% in just a few days in the case! The price of the unit is, I think, equal to it based on the spun aluminum cover vs the plastic every other Sound hole humidifier uses. It looks really nice but works even better. I was really hoping it would eliminate the feedback I get as I play with an amplifier more than not. It doesit perfectly and actually seems to make each note sound out clearer. It also fit perfectly in the sound hole with no issue to install. I’m going to buy an additional one as monies allow…I just wish the Sponge was not cut incorrectly…

I have 4 very expensive acoustic guitars and I live in Chicago. When the heaters come on, the humidity leaves the house and acoustic guitars are NOT HAPPY about this! These humidifiers are awesome - they are easy to use and really seal in the moisture. Now I can leave my acoustics on the rack with my electrics in the winter instead of keeping them trapped in their cases where they are less likely to be played. I purchased one of these to try and then quickly ordered three more. Highly recommend

I had initially bought this for my Zager guitar because theirs is like $40. It fits, but it is snug. After I bought it, for whatever reason I decided to get the one made for the Zager and it did fit way better. The Zager version also did not rub up against the front of the guitar quite so much trying to get it past the strings. So I ended up putting this one in my Fender and it fit really well. Both work well dampening the sound while playing, if that is what you are looking for. And both function perfectly as a humidifier.

Only product I have use this far, after using dampits and the two way packets, that was able to keep the inside of my guitar above %41 humidity during cold times. I am aiming to keep my guitar in the %44-%46 humidity range, and this tool helps a great deal to do so.

Like another said, I don't really care for how this messes with the strings trying to put it on. It works as both a humidifier and a dehumidifier, although if you are like me and need the dehumidifier part, they don't include the necessary silica gel packets for that. Silica gel packets aren't expensive. I don't know why they couldn't have thrown a few in there so it would be completely functional out of the box. Looks nice though. Can also be used for quiet playing. 4 out of 5 stars. Make sure to save any silica packets you find and hoard them.

well it may fit correctly in your guitar hole, it doesn't maintain the moisture for that longer period of time, so you're constantly filling it with water. you better off buying a humidifier and keeping your room between 45 and 50% humidity or by humidifier packs.