About this item Measure your earphones nozzle; these memory foam ear tips fit many earphones with nozzles measuring 4.0mm-5.5mm, suitable for both wireless and wired in-ear styles. Crafted from high-quality polyurethane foam, these memory foam tips are safe and non-toxic, specifically designed for in-ear earphones. They are softer and more comfortable than standard foam materials. The memory foam replacement tips feature a slow rebound, ensuring a snug fit in the ear canal. They are anti-slip, providing 24 hours of comfort, making them ideal for long wear and physical activities. Through extensive testing, the memory foam tips deliver a superior audio experience with enhanced bass and an effective seal to block out external noise. Includes 3 pairs of memory foam ear tips and a plastic storage box. Size: 4 x 3 x 0.4 inches.