The Baffin IceBear is the only Polyurethane boot of its kind, specifically designed for the North American Climate. The durable polyurethane (PU) upper is more caustic and abrasion resistant than rubber or PVC. The upper compound is injected with air providing a ½” protection from cold and inclement weather. A light weight, cushioned polyurethane (PU) midsole provides fatigue reduction while an acid and oil resistant Oarprene rubber outsole supplies exceptional traction in cold and aggressive conditions. This boot does not have a liner and can be worn year round. The IceBear is comfort rated up to -58F. Twenty-five years ago Baffin Footwear began manufacturing moulded insulated and non-insulated footwear products. While traditional moulded boots are suitable for some conditions they are not ideal for cold temperatures. Baffin combines leading molding technology with a foam-based inner boot system, which creates a hybrid style of high performance footwear. This equates to more warmth, better fit, and superior comfort. Baffin uses an unrivalled 8-layer combination of materials that is used in their boots that are rated to -148 degree fahrenheit temperature range. Baffin boots are different to most shoes and work boots because the sole and midsole is moulded to the base in one continuous process. The sole itself is a marvel of modern engineering because it is made up of several advanced thermo-set polymers that are combined together to achieve the right balance of warmth, protection, low weight and grip. This in combination with a Polymech foam removable lining system and innovative Timberwolf leather and Diamond-Lite insulated nylon uppers, creates a relentless focus on perfect boots and winter shoes. Baffin is dedicated to offering boots with functionality and fashion while still maintaining our legendary performance.