The Explorer Camo Heat Float assist bibs is made of high quality, breathable and waterproof material, known ad NORTEX BREATHABLE. It features reinforced knees. It is designed to withstand the harshest elements nature can throw at you. The Explorer 2 will keep you warm at temputratures as low as -35°C. These bibs also includes Norfin HOLLOFIL + FLT Foam to keep you warm and afloat if you find yourself in an unfortunate situation. Designed for ice fishing, but it's perfectly suitable for other winter activities like snowmobiling.