Lunch Ladies Rock Adjustable Ear Loops and 100% Cotton inside All masks are double-layer and have a pocket to add an optional filter. Inner layer is 100% soft black cotton. Fabric: We offer fashion face masks using high-quality water-repellent technology. The outer fabric is made of 100% breathable fabric. Elastic ear straps fit well and comfortably and adjust to your face. Machine or hand washable, quick-dry, easy to care for, and durable. Please don't bleach Impenetrable waterproof outer layer. Prevents droplets from reaching nose & mouth. Great for shopping, work, and all-day wear. One size (Adult Size) fit for most people, easy to wear and off.