100% natural rubber sailing boot for marine professionals. Quick- drying, 3mm neoprene for added warmth and comfort in cold conditions. Durable anti-skid and non-marking sole and salt water resistant upper to protect the boot from the elements. Reinforced side, rear and front panel for maximum protection, stability and support of leg, foot and ankle. Reflective tape on top bind. Please note thatNeoprene has wonderful insulation properties, but it is a non-breathable material. If you wear ourneoprene-lined boot in warm temperatures, or if your feet heat up while wearing, you may perspire. To help to ensure a long life for your Le Chameau boots, please ensure that you dry the insides thoroughly if they do become a little damp when wearing.