Luckvan Memory Foam Ear Tips for Sennheiser IE Earbuds Replacement Tips Noise Re

[Compatible with Sennheiser IE900 IE600 IE300 Earbuds internal diameter 4.9mm fit 5mm~6.5mm nozzle earbuds. This memory foam with Latest polyurethane foam safe and non-toxic the material is soft and comfortable. The foam tips slow rebound fill your ear canal anti-slip no pain feel fit long wearing and exercise. After many tests the memory foam enhanced bass and good seal block out external noise. Internal structure with threaded grooves easy to disassemble suitable for many in-ear earphones.]