Rebekah: you get the idea right. they all have the same STYLE, but dif. sizes..
first: 13" with extra long strap
city: 15" with extra long strap
Part-time: 16" with extra long strap
work: 18", no long strap
weekender: 21" no long strap
the real one only start making giant hw (GH -gold or silver) starting 2007
RH= regular small brass hw is fixed for every season...
hope that help