About this item A combination of eartips and adapter. Eartips: Patented 3D axis to fit like customized. Adapter: Designed exclusively for specific earphones. IP54 Dust and spray resistant mesh protector Detachable ear tips, easy to replace when needed Medical-grade silicone ear tips to reduce allergic reaction Main feature: lighter and more comfortable fit with soft, flexible ear tip material. If you choose the same size as the original tips, youll experience a lighter fit with slightly reduced passive noise isolation. For a fuller, more secure feel and stronger noise isolation, we recommend going one size up. Size: 3.03 x 2.99 x 0.87 inches