Early explorers used alidades to plot the distance between mountains and riverbeds.Channel your inner Magellan to find local up-and-comer Leah Fagan. The German-born designer knows a thing or two about exploring (she grew up in a Bavarian mountain town, moved to Chicago at 18, and studied fashion at Columbia College). No wonder she named her line after the handy instrument.An avid bicycler who hates carrying purses, Fagan designs with mobility and sustainability in mind. Smart details, clean lines, and soft organic cotton comfortably counter the challenges of urban living.Highlights from Alidade include an asymmetric gray static cardigan with pocket, perfectly tailored khaki shorts, and a pocketed sage blouse (for your CTA pass, naturally).You’ve found what you’re looking for.Available at Cerato Boutique, 3451 North Southport Avenue, at Cornelia Avenue (773-248-8604 or ceratoboutique.com), $150-$220. To see styles, go to alidadeapparel.com.Photo: Julia Stotz / Courtesy of AlidadeIt’s time to gear up. We found tennis bags, water bottles, and sports bras that aren’t just for jocks.