1、Compatible With: The foam ear tips come with an industry standard 4.5mm/0.17in wide opening, compatible with the use of 4.5mm/0.17in to 5.5mm/0.21in sound hole headphones. 2、Premium Material: The replacement eartips are made from slow rebound memory sponge material, provides additional noise isolation, ear stability and lasting comfort. 3、New Look: The replacement eartips can breathe new life into your in ear headphones for any damaged, scratched, defective or missing earbuds. 4、Perfect Fit: The soft memory foam changes with the ear canal and fits perfectly into any type of ear canal, perfect for securing headphones. 3 pairs of memory sponge earplugs, 3 sizes, 1 pair for each size; (each pair of L/M/S) 5、Superb Craftsmanship and Small Size: Fine workmanship, delicate and compact appearance. Compact size, easy to carry, to provide you with a better headset use experience.