I wanted to thank you very much for designing such a useful device. I vacation on an island every summer which has many hiking trails. I have recently been diagnosed with multiple sclerosis and have some difficulty walking for long distances or time periods. Thanks to you, I was able to go on my vacation this year, knowing I could stop and sit whenever I needed to. The pak was balanced and light enough for me to carry, even with my moderate instability issues and it was so helpful to just open it up and sit down wherever and whenever I wanted.