We make our fleece jacket and pants specifically to be worn underneath an Aerostich Roadcrafter suit and over your street clothes in nasty weather. They're also perfect whenever lightweight, comfortable warm insulation is desired. And because TL Tec™ offers such a wide comfort range you can carry fewer individual garments. Note: Like most synthetic fabrics, fleece is not flame resistant and will burn or melt if exposed to fire or superhot surfaces. Do not pack or wear near flame or superhot surfaces.