In-ear headphones from Urbanista that both fit well and have good sound isolation. They are also water proof and can handle both a rainy day and a sweaty workout.
From Amazon
Urbanista Tokyo True Wireless Earbuds 16H Playtime Bluetooth 5.0 with Charging Case, Multi Function Button Earphones Compatible with Android and IOS - Black
OnBuy
Urbanista Tokyo True Wireless Earbuds 16H Playtime Bluetooth 5.0 with Charging Case, Multi Function Button Earphones Compatible with Android and