-Puma Super Lightweight Nomex shirt is identical to the underwear used in F1 by Puma drivers. Really white, really light and extremely breathable, it fuses Nomex and natural viscose to offer a comfort and moisture management never known before. The material is designed to thinnest layer possible to offer the lightest weight whilst also not compromising the safety properties of flame resistant Nomex and the fabrics moisture wicking capabilities. Designed to keep you dry in the warm and harsh environment of motorsport, these underwear are Slim Fit-desing