If your a runner like me and struggle with earbuds falling out then consider these. They have a rubber wing which as you can see in the image helps to pressure the earbuds so they don't move. I have used them myself and can attest that it works! Hooray finally earbuds can be mine..
With a microphone and external control as an extra bonus the XT Free from Skullcandy is an excellent sport earbud solution. Being lightweight and stable in the ear and did I mention the sound is great. Good base and detail very enjoyable sound.
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Runners World generally think the same as our editor, great sound no drop out and good fit Read more here.
I use these via bluetooth from my iphone 6s which I carry in my bodbud and I never get any dropout.