Something to add, for those who were having difficulties with the bands falling off or your watch falling off when using aftermarket bands or even Apple ones... I found some solid Elastic Apple Watch bands on Amazon that have turned out to be awesome for peace of mind, they hold on great and there's no clasp to worry about coming loose no matter the activity.Like I've stated before, I'm a mechanic. So this is very important to me as I bang my hands and arms around a lot. I use my fist for a hammer if needed, etc...
They are made of elastic fabric that will absorb a bit of sweat in a work out situation, ir like me, working outdoors all night in the heat, wearing Fire retardant Clothing, which is like wearing commercial awning fabric. It's very thick and hot to wear, so I sweat immense amounts. Also have issues with dehydration due to the same issues... The band dries out quickly even while wearing it, but I will be buying spares to allow me to figure out a way to wash the sweat out of them as well... With all my searches for a good option... this turned out to be best for my situation. Thought maybe others could use some input. Look up Apple Watch Elastic band... They're there.