Are you sure we aren't comparing apples and oranges? I think the second pic is the outer layer, while the first pic is the underlying layers? The outer layer

Are you sure we aren't comparing apples and oranges? I think the second pic is the outer layer, while the first pic is the underlying layers? The outer layer is for rain/downpours. The underlying layer often has windows and lots of airflow for non-wet time. Anyhow, that is how my camping tent works. E.g. https://novaprosports.com.au/blogs/news/why-do-tents-have-two-layers https://novaprosports.com.au/blogs/news/why-do-tents-have-tw...