Lighthearted due to the trivial nature of my complaint.
I bought a running watch that comes with a heart rate monitor (chest strap- not built into the watch). The chest strap is too big- the "one size fits all" is infact size "m-xxl". You can, at extra expense, purchase an extra strap in size "xs-s" or "xxxl" if you are very unusually large or small.
Except I'm not that small. I'm 5"8, with broad shoulders (most womens tops don't fit me unless I size up a couple of sizes), big hands and feet (size 8), muscular...in short, I am reasonably large for a woman (but not fat). So clearly their "one size fits all" is "one size fits most MEN".
I wouldn't mind if their was an option to choose chest strap size when you buy the watch, but there isn't. If you are woman of healthy weight (I'm 10 stone, so not a delicate flower), you have to spend extra to get a strap that fits, as if being female is being an outlier. I'm so tired of male being the default human being 
Rant over.