When youre into barefoot shoes and the weather starts to cool down, get a pair of mens Vivobarefoot Tracker Winter II SG boots! The brands most popular winter model delivers exactly what you expect from a barefoot shoe: zero drop (heel and forefoot at the same height), virtually no torsional rigidity, and no cushioning. - TheSGin the product name stands for Soft Ground, referring to the outsole designed for softer terrain. Its aggressive tread provides optimal grip in muddy and snowy conditions. - The last is wide enough to allow the foot to spread naturally with each step - Upper made from premium Wild Hide leather - Waterproof construction: breathable membrane, taped seams, and water-repellent treatment - Fuzzy lining helps retain body heat - Removable thermal insole adapts to your needsstoring and releasing warmth - The insole also features an aluminum layer that reflects heat back to the foot - Barefoot shoes challenge your muscles and tendons differently than cushioned