1. Material: silicone 2. Use: sleeping aid, noise reduction, waterproof 3. Nano silicone anti-bacterial material, environmental protection and non-toxic, soft and comfortable 4. Silicone in-ear earplugs, good ductility, wearing firm, long wearing without ear swelling 5. 3-layer sound insulation, three-point support, shark fin design ergonomic, comfortable to wear, good noise reduction effect 6. Side wing ear support + 30 degrees oblique into the ear integration design, and the ear to form a triangle of stable support, the post fit the ear canal, sleep without pinched ear 7. Durable, can be washed repeatedly, with good elasticity and memory function, pulling at will without deformation, safe, healthy and hygienic 8. Weight: about 17g
