HONKID Keyboard Foam, Sound Dampening Foam for Mechanical Keyboard Bottom, Made of LE-20 Poron, Black (H 2mm)

It's really hard to put into words how this works. If you are looking for a deeper thock sound and premium feel for your switches, this is the kit for you. I also paired this with a Poron gasket and pads (the little squares with cutouts that the switches rest on). With all three kits installed it takes your keyboard to enthusiast level. The foam needs to be cut to the desired size to put on the bottom of your board. That was easy enough just measure and match. Depending on your board you might have to make little custom changes, but it is worth it if your into modifying. For mine I had to make a little u shape cutout for where the USB-C port was as this raised it to much and wouldn't align with the port.

Made my old GMMK board sound so much better. Before this mod it sounded very hollow, now it sounds deep and doesn’t feel empty anymore. Effective, but a hassle to install.

Nice, dense foam. It does what it is supposed to and took the ping out of my aluminum case. I paired it with the tape mod and it worked perfectly.

Honestly for the price I feel like you should get more than one keyboards worth. Not like 20sq ft or anything but dang. It does help get some deeper thocks though! Easy to cut to fit, sounds great, and stable.

There is probably a bunch of stuff you could put in your keyboard to dampen sound lying around your house, but you were curious, and the internet led you here, to poron foam. It's true, this stuff is good. I had a fun little project upgrade a budget Redragon board with Outemu reds (the most pingy, hollow board I've ever heard), and this poron foam combined with aditional sound dampening foam between the PCB and the plate and a tape mod turned this awful-sounding board into an absolute DELIGHT to type on. Again, poron foam is just part of the equation, but this stuff worked, and I've got a bit left over since the board was TKL and there's enough foam for a full size board. Would buy again!

I used a combination of this and neoprene for my keyboard and they sound great together!

Excellent foam. Works great. The only complaint I could possibly have is that they don't pre-cut it into perfect sizes for keyboards. You'd think they'd do that to save on wasted foam and just provide one size fits all for the various form factors but no biggie, just cut it to size and you're good to go.

I wanna first say I did not try this without the infamous tape mode, but I've had the tape mod in on both my keebs for a while, and adding this foam has really changed the sound. I use linear switches, so I want that "thock" sound, and this definitely raised that sensation for me. It also makes the keyboard feel more robust, in my opinion. I'm a novice modder, so cutting this to shape with my hobby knife wasn't hard, but I definitely wish I'd done a little better about the dimensions. Still, I can wholly recommend this to anyone who is interested in putting foam down in their keyboard and want something specialized for it. It's easy to install, and it works like a treat.