This is on the UK website...I don't see them on the US site. Hope they bring them over - although I kinda don't because I think they're gorgeous and would want a set for my Explorer! They're aluminum, top loading.
http://www.givi.co.uk/Side-hardbags/Monokey--Cam-Side/TREKKER-OUTBACK
http://www.givi.co.uk/Side-hardbags/Monokey--Cam-Side/TREKKER-OUTBACK