Features 1、Unique Design: 3 layer umbrella shaped structure, which can attenuate the impact of sound waves on the eardrum three times, greatly reduce noise and improve sleep quality. 2、Water Proof: Can also be used as swimming earplug, which has good water repellency, can be reused after washing and drying. 3、Ear Safety: Made from anti allergy silicone material, extremely soft and comfortable, light weight, suitable for long term wear. 4、Storage Box: Equipped with independent storage box, convenient to carry, designed with holes, keep earplug ventilated and dry after washing. 5、Multi Purpose: Fully fit design, suitable for people with different ear canal sizes, let you focus on learning or work to improve efficiency. Specification Item Type: Sleeping Ear Plugs Material: Silicone Use: Silicone Earplug Color: Green Size: Package List 3 Pairs x Sleeping Ear Plugs 2 x Silicone Storage Box