About this item Measure your earphones nozzle, these memory foam earbud tips fit many earphones with a 4.0mm-5.5mm nozzle for both wireless and wired in-ear models. Made from high-quality polyurethane foam, these memory foam tips are specially designed for in-ear earphones, providing a softer and more comfortable experience compared to ordinary foam materials. They excel in noise isolation and sound quality enhancement. With a 30 to 60 seconds slow rebound time, the memory foam tips conform closely to the ear canal, are anti-slip, and provide 24 hours of comfort, making them suitable for long wear and exercise. After extensive testing and design, these memory foam tips offer a superior audio experience with enhanced bass and a good seal to block out external noise. Packing: 3 pairs of memory foam tips with storage box for convenient carrying and storing. Size: 3 x 2 x 0.5 inches.