These winter helmet liners offer excellent protection against cold weather. Select products offer two layers of flame-retardant fabric for extra warmth. The liners also offer quilted earflaps so cap-mounted earmuffs can be used without compromising hearing protection levels. Extended nape and wrap around collar for tucking into coat/shirt. Water repellent. 10118425 - Multiple layers of flame-resistant fabric that has been tested to withstand arc exposure to an ATPV of 8 cal/cm2. Inside neck pocket holds a warming packet (not included). Adjustable chinstrap. 10118424 - Bright yellow-green liner and reflective striping improves visibility. Two layers of fabric, flame retardant to 50 washes. Adjustable chinstrap. 10118427 - Multiple layers of flame-resistant fabric that has been tested to withstand arc exposure to an ATPV of 8 cal/cm2. Inside neck pocket holds a warming packet(not included). Adjustable chinstrap. Extended, zipper-on/off, high-bulk, flame-resistant knit bottom.