Ladies Large - though to be honest I can't see the difference between the older mens version in S/M I have been using (daily for over 10,000 miles of commuting) and this aside from two small green 1cm tags that say W so I'd say it's fine for men too 
They're great bags and I've not found a better pack for riding.
In really excellent condition - hardly used hence sale - i think we've still got all the swing tags / instructions etc somewhere. Comes with the detachable rain cover etc.
£73 posted (it's not small so isn't cheap to send) - alternatively I'll happily knock some off if you can collect from EC2 (London) or TN5 (Sussex/Kent border).
Will be taking some pics later today if required -
