The Sierra Liner Jacket is a utilitarian design that can be worn as an outer or inner shell, depending on the occasion. Perfect for throwing on over a tee and under a rain jacket if the sky’s threatening to fall on your head, or keeping the organs warm on a winter’s night out. It’s a regular fit liner jacket with some nice technical features - exposed two-ways zip front closure, seam hand pockets, internal chest zip pocket and more - that’s warm and breathable, thanks to a Cotton/Polymide fabrication and 3m Thinsulate insulation.