Featuring its dual-layer design, this product has well sound blocking, and you can clean them with soap and warm water between use since it is washable and reusable. Using this product can avoid the risk of hearing losing, this product should be both comfortable and functional for many users with flexible silicone material and ergonomically designed shape. Made of silicone material, this product is flexible and long-lasting. The length of the earplugs is 2.5cm. It is suitable for working, sleeping, workshop, factory, industry and so on. Item Name: Ear Plugs Material: Silicone Features: Reusable, Noise Reduction, Comfortable Wear Size Details: Earplugs Length: 2.5cm/0.98" (Approx.) Storage Box Size: 8cm x 9cm x 2.5cm/3.15" x 3.54" x 0.98" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Storage Holder 10 Pairs of Replace Sponge 1 Pair of Ear Plugs(with Dual Layer Silicone)