Flents Quiet Contour Foam Ear Plugs deliver high noise reduction (NRR 33) with a contoured design ideal for sleeping, studying, travel, and loud environments. Made from latex-free polyurethane foam, they work best when rolled tightly, inserted deep, and held for 15–20 seconds to form a proper seal. These disposable plugs effectively muffle steady sounds like snoring and traffic while still allowing you to hear important alerts.