The Vierzonord Plus model is lined with 5 mm neoprene and features an aluminised insole for excellent comfort and better thermal insulation, even in extremely cold weather. This model has a waterproof gusset and a tightening strap to ensure a perfect fit around the leg and calf. Its shock-absorbing, bi-density tread sole prevents fatigue and withstands abrasion, making it suitable for all terrains.Handcrafted from start to finish by a Master Bootmaker Le ChameauMade from our exclusive, flexible, and supple Chamolux rubber Le Chameau100% waterproof. Each pair is carefully testedLined with 5mm neoprenePerfect model for very cold weatherWaterproof gussetAdjustable tightening strap