>>64088680
What is a rucksack anyway ? some of the older ones are tiny, M1910 M1942 M1956 .etc
>>64088672
75 lbs seems more reasonable, but yea it will wreck shoulders lumbar and knees, depending on how bad the backpack is.
>side note is ankle support even real ?
supporting the ankle moves the load up into the knee and hip, so the injury's move higher up the body, not too bad desu.