The reason the Rokkers are waterproof—and presumably part of the reason they’re so damn expensive—is the C-change membrane that’s laminated to the back of the Dynatec chassis. C-change is waterproof, windproof, breathable, and reactive. Pores in the membrane expand or contract based on your skin temperature, which helps sweat evaporate in hot weather. Compared to other reinforced riding jeans I’ve worn (none of which claimed to be waterproof), the Rokkers are substantially thinner and lighter, and they’re also more comfortable in a wider range of conditions. Sure, they’ll keep your lower half completely dry in the rain, but they also keep you cooler in the blazing August sun.