I just ordered a pair of these a couple of weeks ago.
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
and use them with these tips:
https://www.amazon.com/Earphones-Plu...placement+tips
They stick out of your ear a bit farther but stay in better while riding and block out more noise than the standard tips.
With my iphone7, they cut out far less than the $100+ Jaybird branded buds I tried. They also sound better. Ultimately, I prefer Etymotic earbuds, but I've killed three pairs due to sweat getting into the mic/volume buttons. After the Jaybirds performed horribly, I started looking for cheaper options and landed on these.