When I bought these I was looking for some tips for my Noble 4/Savant IEM from Noble Audio. Before I used the medium single flange from Sennheiser which did fit but perhaps a little too snugly so I was looking for an alternative. Saw these on the sit...Read moree and thought I would give them a go. I can certainly say that I am glad I did as the hybrid single/double flange tip which is the best description I can come up with is nigh-on perfect for my ears and makes the Noble 4/Savant disappear. The double flange is narrower but cutting them in half the top flange does fit the Noble 4 quite well, though it is slightly bigger than I would like.