metatarsal boot – the industry’s most advanced rubber metatarsal boot. Steel toe and puncture resistant protection. . . All in a comfortable, durable, 100% waterproof boot. The 16 rubber metatarsal boot is flexible and comfortable in the toughest of work environments. Rubber metatarsal boots are often worn on uneven terrain which can lead to ankle injuries. Tingley has designed an internal support system in the critical areas of the heel and ankle to help mitigate the occurrence of injuries. Ideal applications: mining, manufacturing, and construction. Chemical resistance: acids, alcohols, bases and diluted water solutions of most chemicals that are water soluble. Not recommended for constant contact with petroleum and oil based products.