Measurements:... Memory Foam:.. Small: Outer Diameter:11mm..Height:10mm.. Medium: Outer Diameter:12mm..Height:10mm.. Large: Outer Diameter:14mm..Height:10mm.. Noise Isolation:.. Small:.Outer Diameter:8mm..Height:12mm.. Medium:.Outer Diameter:11mm..Height:13mm.. Large:.Outer Diameter:13mm..Height:14mm.. Product Description:.. -Perfect Replacement Set that includes Memory Foam and Noise Isolation Eartips. -Premium Soft Memory Foam Eartips are excellent in providing a secure fit and maximizing the comfort of your in ear device. -Once Squeezed, the Memory Foam eartips will return back to their original shape and form in about 20 seconds. -Memory Foam technology creates a great seal within the ear canal to provide the best listening experience from your device. -Noise Isolation eartips are great for isolating sound so can keep outside noise to a minimum. -Eartips are Water Washable, antistatic, removable and replaceable. -You can use warm water to wash and clean them to maintain good hygiene and it is good to change and update your eartips periodically to avoid ear irritations. -Perfect fit and comfort for your ears, left and right. -Ideal replacement for any damaged, scratched or defective Earbuds Eartips... Instructions to Install Eartips:.. 1.) With one hand hold the eartip and the other, the In-Ear Earphone Driver. 2.) Place the Driver of the Earphone in the edge of the ear tip canal. 3.) Using your thumb, apply pressure and push down on the top of the eartip onto and until the ear tip has fully covered the Driver of the Earphone. 4.) Once you have put them on properly, they will stay on securely...... To Remove the Eartips:.. -Use your thumb and nail to grip the bottom of the eartip's inner rubber canal and slowly slide off the eartips from the Driver of the Earphone so the memory foam doesn't tear from the rubber canal.