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Firstgear Heated Pant Liner
  • Firstgear Heated Pant Liner
  • Firstgear Heated Pant Liner

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Firstgear Heated Pant Liner

Form fitting, close fit for optimum heat transfer to body. Made of Spandex® fabric allowing full range of movement for any activity and fits easily under your outer garments. Pant Liners are not Unisex. The Men's and Women's Pants Liners are sized differently. And why not, since men and women are built differently.


  • Packs into its included zippered pouch
  • Heated zones cover thigh and knee
  • Integrated sock plugs stow in their own zippered pockets when not in use
  • Coaxial plugs engineered by us for the best connection possible
  • Performance fabric: Anti-bacterial treatment prevents odors and Moisture Management wicks moisture away from skin
  • About 35 watts, 2.7 amps at 12.8 volts
  • This garment is designed to keep you warm when plugged into a DC power source
  • 1-year limited warranty on liners–lifetime warranty on wiring
  • Heat Controllers are sold separately

Make sure to check out our Firstgear Heated Gear Buyers Guide

Write a Product Review for a chance to win our monthly $100 giveaways.
Firstgear Heated Pant Liner 4.5 5 2 2
Wear them under your pants. I'm 5.10, 165lbs, wear 32x32 jeans and 41" chest. I bought the jacket, pants, gloves and socks with a duel semi mount heat troller. Jacket is a size Med and I wear it over a tea shirt and under my riding jacket. Fits perfect and is light weight. Not bulky at all as the picture suggests. Pants are a size Med/Lrg. I wear them under my jeans and riding pants. The pants are not bulky either. The socks are a size Lrg. I'm a size 10 boot, and I wear them over regular cotton socks. For the best performance, you want to keep the jacket and pants close to your skin. I have tried wearing the pants over the jeans, but under my riding pants with decreased heat performance. The gloves are a size large and fit well. They seem to be water proof thus far. The jacket, pants and socks heat very well at temps down to 15deg when worn under normal riding gear. The gloves are good down to about 25deg, then fingers start to get numb. The gloves don't seem to be as good at heating as the rest of the gear, but they are quality made. I have tried every hookup combination. But hooking the jacket, pants and socks on one side of the troller, and then hooking the gloves to the other side works the best in my opinion. You can turn the gloves all the way up, and the other components heat so similar that they work well together on about a med, to med high setting. The heat troller is quality and well maid. It has flashing LEDs that are red and yellow, and flash at different rates depending on the setting. Slow flash/low, fast flash/high. All and all I am very satisfied. Quality gear and great service. March 16, 2013
Very Comfortable Great value and comfort. good heating. would definatly recommend. February 4, 2013
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Have a functionality, fit, or otherwise product-specific question about the Firstgear Heated Pant Liner? Ask it here! If you have a customer service or shipping question, please direct it to our Customer Service department.

Firstgear Heated Pant Liner
Already Asked: 2 Questions, 1 Answer
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RevZilla Store asked: Why did you choose this?
Joshua H: I'm looking for something relatively lightweight to wear under Aerostitch Transit pants. Out of the heated pants (Gerbing, etc.) this was the only one that seemed like a viable option. Mar 1, 2014
A shopper asked: I would like to order the Firstgear women's heated pant liner however I'm concerned about the fit. I'm 5'10" and usually wear a size 10-12. My concern is the length on the women's pant's and am tempted to order the men's version in a medium. I'm assuming the men's run longer than the women's as that is typically the case. What size would I order in Men's? or would the women's version be long enough? Sep 26, 2013
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Product Style RevZilla SKU ID Manufacturer Product # Availability
SM 709887 PANT-FG4-M-SM Available: Usually ships in 1-2 business days
MD-LG 709888 PANT-FG4-M-MD/LG In Stock: Ships within 24 hours
XL-2XL 709889 PANT-FG4-M-XL/2XL Available: Usually ships in 1-2 business days
3XL 709890 PANT-FG4-M-3XL Available: Usually ships in 1-2 business days