Super Leight pre-shaped single-use foam earplugs - 5 pair with carrying case Howard Leight by Honeywell Super Leight Disposable Foam Earplugs offer the best hearing protection for shooting for any single-use earplugs (33 NRR). The pre-shaped, contoured foam is designed to fit almost any ear canal for comfortable all-day wear. A closed-cell outer layer prevents dirt from building up. These earplugs are suitable for use on the range or in the field. 5 pairs of earplugs per pack.