Does Flex Seal dry hard or soft?

I'm curious about the consistency of Flex Seal once it dries. Does it harden into a rigid surface, providing a durable barrier against leaks and wear? Or does it retain a softer, more flexible texture, allowing for some give and movement in the sealed area? Understanding this aspect of Flex Seal's performance is crucial for me to determine if it's the right product for my specific needs. Can you provide some insight into whether Flex Seal dries hard or soft?