I purchased one of the '5 in 1 Amram' backpacks for my daughter. She was in an auto accident a year ago and still has many ongoing issues with her back and neck becuse of it. She is an avid hiker, canoeist and kayaker. She has loaded up the backpack with materials she will be using for an upcoming refresher course for 'first responders' and is able to use the backpack with ease. She's looking forward to taking it out on hikes. You can only imagine how happy I am for her to know that she will be able to resume some of her activities with less pain. I am thrilled she has one of your backpacks. Bonnie S.