With a simple application process, my only real concern was breathability of the materials. I chose a jersey with a soft and smooth front, and sleeves of a slightly more structured texture—being curious how Dr. Dry would fair on varying surfaces. And lastly, purposely left one sleeve uncoated to compare results.
Neither spray from the road, nor a drizzle penetrated, however Dr. Dry offered less protection than I would have liked against a downpour. Angle of impact seemed to have an effect on precipitation too, as less resistance was offered against direct hits compared to surfaces at a slant.
An unexpected benefit was the quick drying characteristics, coupled with breathability, it inherently ensured better body temperature regulation.
Overall I am impressed, the concept is noteworthy, but when it comes down to it—I would still reach for my rain jacket before heading out the door.