1. The noise reduction and sound insulation earplugs are made of elastic material, providing a comfortable fit and enhancing the seal within the ear canal for a secure and snug wearing experience. 2. Designed to not interfere with the charging case, even larger sizes can be safely stored inside. 3. Ergonomic design conforms to the natural shape of the human ear canal. Body heat-activated material ensures a comfortable fit and remains gentle on the ears. 4. Precisely molded to match the original earbud shape for a secure fit and effective sound isolation. 5. Nano-coated surface is soft and breathable, allowing for extended wear without discomfort. Compatible with: 1000XM4, 1000XM3, Airdots 3Pro Earbuds Note: Product appearance and printed text may vary slightly between batches, but this does not affect functionality. Color: Black Material: Sponge Size: M Package Contents: 3 pairs * sponge earphone covers for in-ear headphones Note: Only the items listed above are included. Other accessories are not part of the package. Lighting and display settings may cause slight variations in color between the image and the actual product. Measurement tolerance: +/- 1-3 cm.