>>1948415pretty good actually. did a hike with 50 lbs (22kg) and it was pretty comfortable.
>>1948259>>1948283the compression straps keep everything really as close to your back as possible. this seems simple and obvious but most backpacks keep everything further away from your back
in this photo you can see a whole bunch of other types of bags. external frame and osprey and kelty. all carrying about the same load (30-50lbs). you can see that mine (the red box) is closest to my back and the most comfortable. also i use the straps to tightly attach things to the outside. a tarp a tree saw and a coat in these photos but i have also attached shorter shovels and a pickaxe with little trouble