Topeak SideKick Wedge Pack with F25 Fixer Large side opening panels provide easy access to all of your riding essentials and bright interior makes it easier to locate smaller or darker items Rigid aerodynamic design resists sagging and swaying while riding Molded panels are protective and water repellent 3M reflective strip for increased nighttime visibility 110 g / 3.87 oz, 7 x 4.3 x 4.5 -Inch Large side opening panels provide easy access to all of your riding essentials and bright interior makes it easier to locate smaller or darker items Rigid aerodynamic design resists sagging and swaying while riding Molded panels are protective and water repellent 3M reflective strip for increased nighttime visibility