The Thule Yepp Maxi EasyFit Rack Mounted Child Seats name implies how simple it is to use. It simply mounts to a Rea rack using an EasyFit Adapter, or can mount directly to a Yepp Rear Rack, for either 26''' or 29'''' bicycles. At only 8.4 pounds, the EasyFit is incredibly lightweight and incredibly safe. Made from a durable water repellant material, the EasyFit ensures a perfect fit and will continue to grow with your little ones. Thoughtful features like an included anti-theft lock, adjustable footrests, a padded 5 point harness, it is easy to see why these are some of the highest rated child seats in the industry.