The Topeak Trunk Bag MTX DXP is the biggest MTX series bag that Topeak has ever made. Designed with an expandable top section & two side panels that fold out into two full panniers, this bag has a total capacity of 22.6 litres, making it perfect for bike packing & commuting. With several external pockets & elastic bungee cords, you can also access small essentials, like energy bars or petty cash quickly & easily. It even has a secure rear bottle holder for maximum water storage Constructed from 600 denier polyester, this is also one of the strongest & most weather resistant bags Topeak have made too, so even in the worst downpours, your essentials are kept safe & dry. Unlike many rear rack bags & panniers which have a habit of obscuring rear lights, the Topeak Trunk Bag MTX DXP has a dedicated safety clip for your light, as well as reflective detailing for added visibility. Large capacity expandable main compartment with two large side panniers, & a separate top compartment. Foam walls provide padding & insulation for use as a cooler or camera bag 420 Denier nylon for superb weather resistance Elastic top bungees Insulated water bottle holder on back of bag Extra think rigid foam sides, top & bottom Safety light clip 3M Reflective strip for safety, built in carrying handle, plus detachable shoulder strap Capacity 20.2 Litres/1220ci 43.5x 24x 21.5/31cm 1160g