Color of foam might be different than pictured.
All Mekanisk tray mount keyboards (Fjell, Klippe T...)
Most other 60% tray mount keyboards
Made from high quality medium-high density EVA foam, is made to reduce rattles, contain the sound and create a better typing experience. Fits Mekanisk and other brand tray mount cases, however minor adjustments are expected to be made by the customer for certain configurations. Each layer of foam is 2mm thick.
Two layers are included, for a total of 4mm dampening foam.
For Mekanisk boards in normal configurations, it is recommended to have two pieces ( 2x 2mm ). Other boards, or certain PCBs might only be compatible/need one layer.