I got a Velcro band for the 7s, agree with other comments, the Velcro band is so comfortable. I got the Abanenband via Amazon. https://www.amazon.com/Abanen-Ultralight-Wristband-Sapphire-Instinct/dp/B09BG4ZPMR
I play golf and use an abanen strap off amazon. https://www.amazon.com/Abanen-Ultralight-Wristband-Sapphire-Instinct/dp/B09BG4ZPMR
I DON‘T like the Apple loops for difficulty sizing and tendency to stretch. For an outdoor activity and adventure focused watch, I think you want to ensure a consistent fit for your heart rate and other metrics. I suggest looking at the Abanen nylon/Velcro on Amazon. Similar to Apple quality for their nylon straps. They are easy to install, infinitely adjustable, breath well, don’t hold moisture and have a slight stretchiness that keeps the sensors positioned without having to over tighten.
https://www.amazon.com/Abanen-Ultralight-Wristband-Sapphire-Instinct/dp/B09BG4ZPMR