Walker's Razor Compact Passive Muffs feature an NRR of 25 and a sound-dampening composite housing that blocks harmful noise while preserving clarity and letting wearers hear important ambient sounds. Lightweight and compact, they feature durable rubberized ear cups that resist wear and tear, and a convenient foldable design. The padded headband with a strong metal wire frame delivers a snug, adjustable fit that won't slide or slip.Features :Ultra Low-Profile Ear Cups Designed for a Sleek, Comfortable FitIdeal for Smaller Head SizesNRR 24DB