Pintechs trigger foam is a result of years of research and development. This foam works great with mesh heads or acoustic heads. Long lasting, easy to replace and made in America. Medium Density Core: allows the vibrations to be more concentrated towards the bottom of the foam. Soft Density Upper Wrap: helps to keep the inner foam in place while offering a density that is so low that it will not create a larger "Hot Spot". Medium Density Base: This holds everything together and is what covers our trigger. Creates an ideal solution for drum triggers when combined with our upper core foam.