The ThermoBall™ Progressive II Waterproof Zip-Up Winter Boots are designed for women who want a stylish and functional boot for winter. These boots are waterproof and breathable, thanks to DryVent™ technology, keeping your feet comfortable all day long. The ThermoBall™ Eco insulation provides warmth even in damp conditions, while the grippy rubber soles and supportive OrthoLite® footbeds ensure a comfortable and confident stride. The unique fabric technology allows air to pass through, regulating body temperature and keeping you cool. The durable water-repellent finish protects against light moisture and fabric saturation.