We are a Running Backpack Company for trail running, marathons, running to work, class, practice, grocery, we have a line for military application, snowmobiling, snowboarding and more. Our inventors came up with this design as they were always late for class or practice... There is full compression on the back of the pack to keep everything inside from moving and the Patented Pending additions are "Under the Back of the Arm Straps" or as we call them "Lat Straps" that come around just under the chest to secure the pack from moving relative to the users body.
Check www.LatLock.com they have a new backpack design that DOES NOT BOUNCE when you run!!
Check our videos, pictures, info and more Latlock Running Backpacks www.latlock.com