Sure. My plugs are Elacin ER. I walked into a hearing aid/protection shop and got a mold of my ear canals made. Plugs were made to match the mold, took a couple of weeks and about 200€. Noise reduction is done with an exchangeable filter with different options for reduction levels, I'm using 25dB.

Not the cheapest but if you don't lose them the should last a decade.

Let me know if you have any other questions!