Mask Strap extenders with fashionable design, light weight, aseptic, environmental friendly silicone flexible material, self-cleaning, high temperature disinfection, unlimited reuse, no allergy, perfect fit to your head, maximum comfort, surround design, adjustable belt, tasteless, long service life, etc. Specifications: Material: silicone size: 14cm * 1.4cm * 0.6cm Net weight: 9g per Package Included: 8* ear extenders buckles