OpenFit 1

I have the original OpenFit and wear them with sunglasses any time I run outside. Never had any problems with it. Wouldn't wear them in the gym tho, I've got noise cancelling earbuds for that.

I’m gonna say something controversial. After trying the Shockz 1 and thinking they weren’t loud enough and then again trying the 2s and having the same issue. I have given up on them. I honestly just bought two cheap pairs of Tozo open ear headphones from Amazon and I love them. They are incredibly comfortable, and quite a bit louder. The louder volume was specially useful for those of you that are into podcasts. Or if part of your run is down bus streets. You can still hear everything outside of you very well but having the option to higher volume is great. I’ve used these for several 50ks and 100ks. Hope this helps!

The most basic shokz model. I have no issues wearing them with sunglasses and a hat or headband over my ears in winter.

https://shokz.com/products/openfit2 I wear these, the sound quality is great, I can still hear my surroundings and they are comfortable to wear/stay in place if you run or jog Edit: Just noticed you said cheap. These are pretty pricy but I’ll leave the comment up in case anyone else is interested.

I wear Shokz Openfit, they don’t slip at all. The sound is great and you can hear your surroundings too.

I use Shokz openfit. The sound is great but they allow me to hear the sounds around me, very important to me that I can hear if someone is near me, as a female that runs alone.

Yep, Shokz OpenFit Pro here. The bit of noice cancelling they offer while being open ear is a nice bonus. Used OpenFit 1 and 2 as well. Used their bone conduction line beforehand also.