All HOT RODS liners have two built-in pockets, near the wearer's ears, which hold HOT RODS regular size Warming Packs. The Warming Pack will stay warm from 7 to 11 hours, depending upon how much oxygen they are exposed to, and will keep the wearer's ears toasty warm. Warming Packs are sold with liners or separately. 

All HOT RODS winter liners are manufactured with a short elastic strip in the forehead area to keep the liner snug against the face. Other winter liners do not have this feature. As a result, other liners have huge gaps which let the cold blow right in. HOT RODS Zap the Gap! 

Most HOT ROD models have warming pack pockets lined with Dupont's Thermotex, a lightweight 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.

All HOT RODS winter liners (except knitted tubes) have a unique strip of reflective film above the back of the neck. For work in 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 much work near traffic.