Megan has managed to get a Jack Murphy Malvern raincoat - reputed to be one of the best, with 20,000mm waterproofing - it's raining, and the waterfall is flowing, so she decides to see how good it is. She stands under the full flow - her headscarf is saturated, but the Malvern raincoat barely seems to notice the pounding it's receiving - even when she pauses to bend forward so that the full force is directly onto the back of her raincoat, still no penetration. Even when she is only at the edge of the falls it's equivalent to a torrential rainstorm, but the Malvern is not only resistant, there is still some water beading on the surface - even the outer coating of the material has not been fully soaked. She looks forward to a much longer exposure in some really heavy rain, and possibly one of the more powerfull waterfalls!
https://youtu.be/oFbFX5ibpvk