No comparison to the Skin Cooler Fabric!
I just finished a 2 day all day stage trail race in AZ near Phoenix - Both days the weather was identical - clear skies, 85-88 degrees, desert sun in the peak afternoon. One day I used the De Soto Skin Cooler Arm Coolers and the other day I used a competitors white UV sun sleeve - not even a close comparison, the DeSoto Arm Coolers were hands down way more effective at topical cooling in the desert heat, comfortable and yes very cooling whether wet or dry. The other high end brand didn’t even come close to De Soto, in fact I had to remove and stash away the other brand arm sleeves to manage the heat as they kept getting warm and stuffy feeling once they were dry. This De Soto skin cooler fabric actually works, provided topical cooling and kept me comfortable in the heat, were very durable (hit the dirt and rocks once after tripping, and the odd cactus leaning over the trail didn’t pull the fabric) and felt light on the arms - these are long endurance races and the arm sleeves never became an irritant at the cuff I’m definitely sticking with De Soto for my future hot weather gear purchases. Also De Soto customer service was also excellent - they were fast and friendly to respond helping with sizing recommendations and other questions.