Are foam earplugs or Loop-style reusable earplugs better for sleeping?

For raw noise blocking, foam wins. Foam plugs from Mack's carry a 33 dB NRR, while the most popular Loop sleep options sit at 24-27 dB (SNR). Specialist subreddit threads consistently note that Loop is more comfortable and reusable but lets more sound through than a properly inserted foam plug. If pure silence is the goal, reviewers point to foam; if you want a comfortable reusable plug for side sleeping and partial sound blocking, Loop is the consensus pick.