The Alpinestarts Tech ZX Underwear is developed using LENZING™ FR, a flame-resistant viscose fiber produced through a sustainable process. The fabric is thin, lightweight, and designed for a soft, comfortable feel against the skin. Based on materials and construction used in Formula 1, It is certified in accordance with the FIA 8856-2018 homologation, and the underwear is intended to be worn under standard racing layers, helping to reduce discomfort during use.
