If you start to get claustrophobic, just take a few deep breaths.
Grandpa, our house is a 1/4 mile away. I know this looks like the place where your plane crashed in 'Nam but this is just the worst camping trip ever. ~NSHA
If he falls he just has to grab onto the umbrella which will provide a gentle float down to the ground.
It keeps it closer to the sun, keeping me cooler. It's science.