The Thule 400xt Aero Foot Pack has been created as a multi-purpose rack solution for vehicles without rain gutters. The 400xt Aero replaces the original Thule 400 Aero Foot Pack, and has both better aerodynamics and updated looks with contemporary, stylized covers. The 400xt Aero is incredibly easy to install, with a new, patented tool-free design. This foot pack provides for excellent load distribution, for maximum stability that is achieved via extra wide foot pads. This pack weighs six pounds, but user's should note that it requires Thule Fit Kits and Thule Load Bars, both of which are sold separately. What's in the Box? 4 x 400xt Aero feet, a measuring tape, 4 x covers, 400xt parts bag including: 4 x snub-nose bolts with handles, 4 x end caps, 4 x lock plugs, 4 x end caps, 4 x convex washers, and instruction guide Manufacturer's Warranty Limited lifetime warranty