The Krimson Klover Adrenaline. 1/4-Zip top is a lightweight base layer that’s loaded with style. A bright and artistic retro skier rendering covers the entire front, so you’ll be stylish as can be.. The Krimson Klover Adrenaline is made from a mix of Tencel and spandex, making it super stretchy and easy to care for, while also providing you with quality breathability and moisture control so you won't have to worry about getting cold or wet. Absorbent fabric keeps you dry and comfortable