My review is based on these earbuds being used under a motorcycle helmet. Pros: Very nicely built. The most comfortable ear buds ever used. (I have several) The memory cables are great. Never had any discomfort, aches or pain after using it for 2 hours continuous. Cons: For under helmet use I had to increase volume substantially and only had screeching sounds. Absolutely np Bass. No noise suppression what-s-ever and either the memory buds or silicone did not enter the ear canal to suppress external noise. Conclusion: I f you are looking for under helmet ear buds. Forget this product. The best I have so far is the Klipsich sport.