1、SILICONE MATERIAL: Ear tips are made of premium silicone material to ensure long lasting comfort for your ears. Reusable and washable with water. 2、NOISE ISOLATION: These ear tips are sound isolating designed to reduce ambient noise for high strength listening, helping you enjoy your music better. 3、COMPATIBLE MODEL: This earbuds cover is compatible with for Galaxy Buds 2 SM R177 wireless bluetooth earphones, a great choice for replacing lost or damaged eartips. 4、CONVENIENT AND PRACTICAL: The earbuds tips fit into the charging case, eliminating the need to remove them before charging. Easy to install and use. 5、3 SIZES: You will get 3 pairs of silicone eartips, one pair each of S, M and L size, you can change them according to your ear comfort level.