The E-Xplorer TrunkBox is a specific eBike spare battery carrier made of expanded polypropylene that provides excellent shock absorption, water resistance, high strength and thermal insulation. Handles secure the spare battery in place. Compatible with MTX QuickTrack® 2.0 of Topeak. The box also offers plenty of space to carry food, drink and gear for your eMTB adventures! Arrangement: 1 main chamber Volume: 8.5 L , for batteries up to 42 x 10 x 11 cm Insulation: expanded polyproplyene Material: EPP / Engineering grade ploymer Fixing: MTX QuickTrack® 2.0 system / compatible with TetraRack M2L Dimensions: 48.4 x 23.9 x 21.1 cm Weight: 939 g