Spacebar dampening foam helps to reduce vibrations during spacebar keypresses, improving the sound and "thockyness."
Dampening foam is available in two sizes for standard 6.25u and 7u spacebars.
Made of Eva and Poron material.

Each set comes with 4 pieces of dampening foam intended for use with one spacebar.

View pdf for usage instructions: Kelowna Spacebar Dampener Foam Usage Instructions