These silicone putty earplugs are the best

I stay in hotels quite a bit, and these silicone putty earplugs are the best ones I've found for muffling noise. My ear canals don't work well with those cylindrical foam plugs. They leave an air gap. These silicone earplugs form a perfect seal, and they don't penetrate my ear canal at all. They are the only earplugs that feel comfortable for me. I've also found them useful when I use an air blower or an angle grinder. They cost $12.99 for a 12-pack on Amazon.