How to Explain tree swing installation to a Five-Year-Old

http://u3qkqob935.nation2.com/how-to-get-more-results-out-of-your-tree-swing-ins

This swing was a gift for our grandson for his upcoming birthday. It looks to be very well made and sturdy. Once my son-in-law installs it I'll be able to see better how it performs but so far so good.