Just do a search for something like "music ear defenders/protectors" and you'll see plenty of options. Don't go for the cheap disposable rubber foam ones becau

Just do a search for something like "music ear defenders/protectors" and you'll see plenty of options. Don't go for the cheap disposable rubber foam ones because those just block your ears. Look for proper reusable silicone ones. They are specially designed to block harmful frequencies without muffling or distorting the sound. Good luck :-)