Hypalon
Hypalon is a very tough, UV-resistant rubber coating used on large rafts and folding boats.
Hypalon plays hardly any role in packrafts because of its high weight, but on folding boats it's a classic hull material. According to the manufacturer, Patch'n Go also sticks to Hypalon.
Sources and further reading
Research as of 13 Nov 2026. We have marked manufacturer information as such.