The Assos S7 fuguCap is Assos' heavy duty winter headgear. They rate it as part of climaRange Winter Plus, meaning Assos designers deem it appropriate for temperatures from 6 to 6 degrees Celsius 21 to 43 degrees Fahrenheit. Your experience may vary. It is similar to Assos' roboCap in how the skull casing is shaped with earflaps that drop down, rather than having your ears exposed like a standard beanie. The fuguCap distinguishes itself due to all the fabrics that go into making it warm. The front of the cap has stratagonUltra wrapping around the forehead on the outside with RXQ fleece underneath. StratagonUltra is Assos' flexible membrane fabric. It is wind and water proof at all times, but as it senses warmth from the inside, the pores in the membrane open up allowing sweat vapor to escape. This keeps your head nice and toasty on the coldest days without overheating easily. The rest of the cap is made with the RXQ fleece that is warm, light, thin, stretchy, and wicks very well. The Assos fuguCap comes in White. There are three sizes 0, I, and II.