The skirt seems to be poofier than Run: Tracker Skirt which is currently in Loot. The bonus I guess is in the chamois and the inner pocket and the reflectors. I also think this one is an inch or two longer so I wonder if these can be worn a little flatter for more leg coverage or poofier if you like it that way.
Inside of the skirt
Did you know you can get my outfit details right here? Just click on the image you want the details for and it will show you all the items.