I recently floated the Middle Fork Salmon river in Idaho (in early August), and these were exactly what I needed to keep my legs out of the sun, and provided a nice thin layer of protection from the cold water.
The men's Convertible Pant has all the features and benefits of the Paddling Pant, but with the added benefit of zip-off pant legs to convert into paddling shorts. The pants are fast drying and provide UPF 30+ sun protection and are made of a soft, lightweight stretch woven nylon fabric for easy mobility. They feature two front hand pockets and a horizontal zippered stash pocket on the left thigh for quick access while seated in a kayak. The zipper fly pants feature a removable nylon web belt and pant hems with micro bungee cords that can be quickly cinched.