Protective mitts and mittens prevent injuries, insulate users from extreme temperatures and resist abrasion and wear. They are typically made of durable, cut-resistant materials like Spectra. Spectra mitts protect against abrasion, fungus, bacteria and scratches. They also resist temperatures from -450 to 800 degrees Fahrenheit. Other protective mitt materials include neoprene, fire-resistant Zetex and Kevlar/fiberglass blend.