• Warming Pack Pockets: Two built-in pockets, proximate to the wearer's ears, which hold HOT RODS regular size Warming Packs which are sold separately. The Warming Packs will stay warm from 7 to 11 hours.• Flame Retardant: All models are flame retardant, except as noted.• Dupont Thermotex Ear Barrier:Most models have warming pack pockets lined with DuPont’s Thermotex, a light-weight microporous nonwoven material. This material provides extraordinary protection for sensitive ears against wind, water and cold. Thermotex offers excellent wind blocking. The stronger and colder the wind, the greater the benefits when compared to many other thermo-insulation materials.• Reflective Strip: Has a unique strip of reflective film above the back of the neck. For work in the low light or dark hours of the day, this super bright strip of silver reflective film provides just a little bit of extra safety for those who must work near traffic.• Elastic For Snug Fit: Has a short elastic strip in the forehead area to keep the liner snug against the face.
