PrimaLoft is a brand of synthetic insulation originally developed for the United States Army that's regularly found in outdoor products, like outerwear, gloves and even sleeping bags. adidas Originals has enlisted the heavy-duty material for the PrimaLoft Winter Boots Pack as part of their F/W 2014 line, just in time for the months of cold to come. The pack has 5 versions of the ZX Casual Mid and the Torsion Trail silhouettes, made in suede and textile in a series of slick tonal colorways. Each model comes ready with PrimaLoft insulated lining to keep you nice and toasty all winter long. The shoes are finished with contrast accents, like splashes of yellow or red, and paint-splattered laces. The PrimaLoft Pack drops on November 1 at adidas Originals retailers everywhere.