It's slightly misleading to call the Assos NS.skinFoil_summer_s7 a body insulator, because it's designed to help you stay cool on super-hot days, but we know what Assos is trying to say. "SkinFoil Body Insulator" is the catchall name for Assos' collection of baselayers, which range from ultralight layers to actual thermal garments, and the NS. summer_s7 just happens to fall on the warm-weather end of the spectrum.
Effective moisture management is key to staying cool, and the summer_s7's blend of nylon and polyester is specially engineered to transport sweat and vapor quickly away from your skin for effective evaporation and cooling. The form fit supports your muscles and prevents discomfort, and the sleeveless design reduces weight and helps prevent overheating when worn under a jersey or jacket.
It's no secret that Assos does baselayers the best. I've been very happy with the SkinFoil Summer, but I did find that I had to size down from I to 0 to get the right fit.
I wear this layer under my light weight (Assos Mangusta) and middle weight jerseys. I'm 5'11" 165lb and use/own both the medium and large. The material is quite stretchy so both fit without wrinkles. I love the seamless construction.
Very well thought out concept for moisture management. This works shockingly well; keeping you cool when by removing moisture away from the skin, efficiently, effectively and continuously. It really works.
The material is noticeably more durable than fabrics from other brands, while still remaining exceptionally comfortable. I like to pair this with the ASSOS SS.MANGUSSTA_S7 JERSEY, a combo that works very well for keeping your core body temperature in check.
Sizing was spot on, on 5'10'' 160 lbs. and the medium is a comfortable fit. Could likely fit the smalls for a tighter fit if needed, but the medium fits well.