Topeak aero wedge strap on saddle bag topeaks aero wedge strap on saddle bag is sleek and aerodynamic so that the aesthetics match its functionality carry your essential like spare tools tubes food wallet keys a mini pump and anything else you might need featuresmaterial 1200 denier nylon dupont teflon coating3m reflective strip redlite clipnylon strapsbuckletail light strapexpanding design m ldimensions 114 x 216 x14cm large 96 x 203 x 12 7cm medium 71 x 178 x 10 9cm