Features 1、Noise Reduction: Sleeping earplugs based on surfaces sound waves technology that create a 2 layer seamless sealing for noise cancellation. 2、Umbrella Structure Design: Umbrella structure design will reduce unwanted noise up to 90% layer by layer, wear it, your world will be quiet. 3、High Quality Materials: Made of high quality silicone material, the earplugs are skin friendly, soft and have a long service life. 4、Safe Comfortable: Fits your inner ear canal perfectly, reducing friction and damage to the inner ear canal, safe and comfortable. 5、Applicable Scene: With sophisticated production technology and fine workmanship, the earplugs are suitable for dormitory, home, sleep. Specifications Item Type: Earplugs Material: Silicone Product Size: Length: Approx. 25mm / 1.0in Quantity of Earplugs: 2pcs/box Application: Noise Reduction, Sound Insulation Weight: Approx. 18g / 0.6oz Package List 1 x Left Earplug 1 x Right Earplug