In-ear headphones from Nothing that both fit well and have good sound isolation. They have clever buttons that you can use to quickly skip songs or answer a phone call.
From Ssense
Nothing White Nothing Ear 1 Earphones - White - UNI
ShopBetter24
Headphones with Microphone Nothing Ear 2024 Black
Shopaide
Headphones with Microphone Nothing Ear 2024 Black