US Patent 9186538 Exercise sled and backpack combination

An exercise apparatus for wearing about an upper portion of a user's body and for securing weights having a centrally-located hole extending therethrough to the body. The apparatus generally includes a frame backpack and an exercise sled to which one or more weights may be attached. The exercise sled is removably mounted to the frame backpack to operate in a first mode of operation and may be used separately from the frame backpack in a second mode of operation. In certain embodiments, the apparatus may include a connection strap for connecting the exercise sled to the frame backpack in the second mode of operation such that a user may pull the exercise sled while wearing the frame backpack.