Feature: 1. Adopt mesh cloth design and high quality loop design, light and soft, durable, not easy to slide. 2. Selection of mesh fabric material, can wear more breathable and comfortable, not easy to itch. 3. Suitable for snoring with open mouth, can keep chin forward, keep airway smooth, effectively prevent snoring. 4. Design for human mechanics, use physical correction method to correct, effectively improve the face shape. 5. Small size, light weight, easy to wear, simple to use, can provide you with quality sleep experience. Specification: Item Type: Strap Material: Mesh Colors: Gray Weight: Approx.27g/1.0oz Package List: 1 x StrapSmall size, light weight, easy to wear, simple to use, can provide you with quality sleep experience. Design for human mechanics, use physical correction method to correct, effectively improve the face shape. Suitable for snoring with open mouth, can keep chin forward, keep airway smooth, effectively prevent snoring. Selection of mesh fabric material, can wear more breathable and comfortable, not easy to itch. Adopt mesh cloth design and high quality loop design, light and soft, durable, not easy to slide.Batteries required: No. : B0B2F56PXK. Manufacturer: Folanda. Item Weight: 1.06 ounces. Package Dimensions: 4.96 x 2.64 x 1.3 inches.