When running in cold weather, which one of the following materials is not recommended for layering next to the skin?
a. Cotton
b. Polyester
c. Wool
d. Nylon

Respuesta :

Sorry if this is not too much help- but I believe that it would be D. Cotton and Wool are both natural, strong fibres that have good insulation. Polyester has sinilar properties but is a synethic fibre.