The E-Xplorer TrunkBag is an eBike specific spare battery carrier made of rigid EVA foam and Polyethylene providing structure, excellent impact absorption, and water repellencyIn addition to the expandable top section, the side panels expand to full panniers maximizing capacityGrip straps secure a spare battery in place while 3M reflective strips and attachable rear light MOLLEcompatible strap add extra safetyCompatible with Topeaks MTX QuickTrack 2.0 racksQuick Release17.1x11.6x9.31590 c.i.BlackXXX-Large (700+ c.i.)UPC/EAN/GTIN: 883466036468