Topeak wedge ii saddle bagan updated and improved version of the topeak popular traditional wedge pack the wedge pack ii features durable 1000 denier wrap around zipper extra long 3m reflective strip for added safety at night and a zippered expanding main compartment for added storage featureattachments quickclick with seatpost strap f25 capacity 125 1 65l large 095 1 25l medium material 1000 denier nylon dupont teflon coating expanding yes medium and largeadded features