Unique and Portable: Compact folding design for portability Construction: The Passive Muff has an in-built comfort headband with metal wire frame Additional Features: Sound dampening composite housing with 27 Noise reduction rating Bundle Includes: 5 x Walker's Razor Slim Passive Safety Ear Muffs (Yellow, Don't Tread On Me) Comfortable Fit: Razor Slim Passive Muff are developed specifically to fit better and more comfortably on youth and women shooters