large for male hands as larger rest area for hand

I think this is to do with the size of the rubber grips rather than the metal ends - the pads are supposed to 'ergonomically' fit the palm of your hand, so (excusing the generalisation) probably S if a woman and L if a man?

There is a diffrence in the length of grips. I ordered the medium at first but had to send them back as I felt really cramped up on them. I don't have large hands.

match your gloves size to the grips, L\XL gloves get the large grips

I use XL gloves of all type, and I bought the large grips with bar ends. Glad I did because otherwise edge of hand would be pushing against bar end uncomfortably. Although, bar ends not crucial IMHO.

I have the larger of the grips, my hands aren't that big, medium glove, and the grips are fine size wise.
These are very very comfortable, frankly quite decadent really. I was concerned that they would just be an expensive gimmick but they are clearly not, worth every penny, certainly would not go back to standard grips.

according to the new packaging, if you wear gloves s\m, go for small, and if your glove size is L\XL go for large.

the size is just if they suit larger or smaller hands.

It is for 2, the other is hidden in the packaging

The current item is 2010 version, with anti slip rubber inserts, instead of the old version (magnesium alloy)

adjustable, larger hand area