Solving Backpacking Problems After Surgery

We bought two packs for our 800 km Camino del Norte trek in Spain. The packs have greatly exceeded our expectations. I have lymphadema in my arm after breast cancer treatment in 2011 and even with my small conventional day pack, my arm would swell and ache at the end of even a 5kms walk...with your system I can walk 20 kms and I am pain free at the end.
I have been singing balanced pack praises and so many people stop me on my walks and ask about them!

Marion Armstrong, Mt Maunganui, NZ