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Bilt Inner Boot Liners

FREEZE-OUT utilizes cutting-edge membrane laminate barrier technology to block wind and retain warmth while allowing internal moisture to escape. Brushed poly interior facilitates moisture transfer and is supremely comfortable. Thin and light with flat-lock seams to layer easily under riding apparel and equipment. Extend your riding comfort with FREEZE-OUT accessories.


  • Advance barrier technology seals out cold air and wind
  • Brushed poly interior wicks moisture and feels great against skin
  • Stretch and recovery for a comfortable fit without binding
  • Flat-lock seams are comfortable and layer easily
  • Elasticized openings seal out the elements

Sizing: Length of Sock

  • SM: 10"
  • MD: 11"
  • LG: 12"
  • XL: 13"
  • 2XL: 13.5"
  • 3XL: 14"
  • 4XL: 15"
4.1 / 5.0
90 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Great Price on a good product
Used these under my Sidi Vortice Air on a cool day - feet stayed warm and dry all day long. It was not a bitterly cold day, but without these my feet would have been frozen. The long periods of heat here in Central Texas call for perforated leather, so these all for all year around comfort.

PROS: Easy of use, price

CONS: Material may wear easily

November 16, 2011
Surprisingly good
I've been wearing these with socks and a pair of mesh New Balance sneakers and they are surprisingly effective are keeping my feet warm during 20 minute rides in 40 degree weather.

PROS: Easy To Use, Lightweight

September 28, 2014
Great Bootie
Have used in 38 deg. weather so far and my feet have not gotten cold. In conjunction with thick socks and a weather proof boot.

PROS: Universal fit, Stores easy, Good protection from wind, Great price

December 14, 2011
Sorta warm feet
Was great at keeping the wind out and cold associated with the wind. But when temps dip down with or without wind my feet were still cold. I really like them and my feet stayed warm at temps above 32.

PROS: Keeps wind out, Warmer than without

CONS: Not for cold temps

February 20, 2012
Used once on a commute with the temperature in the mid 30's. I couldn't tell a difference versus using regular socks. These are a bit tight with high arches.
March 10, 2012
Good quality, great insulator
I would recommend this and all freeze-out products, take advantage of the closeout price, they are worth the regular price as well

PROS: Versatile, Durable, Lightweight


BEST USES: Long Rides, Street, Works Well With Race Boot
September 13, 2012
Another great product that delivers.
These really work as advertised. Very warm yet breathable.

PROS: Lightweight

October 5, 2012
Perfectly Warm!
I ride an hour and a half to work and then again home. On very cold mornings I wear all my Freeze-Out clothing (socks, long johns, shirt, and jacket) and have absolutely NO problem staying warm! The socks I wear over regular socks, inside my sneakers. I do NOT need to wear warm shoes or socks, even in freezing temperatures.

PROS: Very warm, Lightweight

CONS: Difficult To Use

November 4, 2012
Great Price Work as Advertised
Used on 40 a degree day over regular socks. Made my boots fit a bit snug. They did keep my feet from feeling the chill.

PROS: Lightweight, Easy To Use

November 8, 2012
warm and really comfortable
Keeps the cold wind from coming in works great

PROS: Easy To Use, Lightweight, Durable

BEST USES: Long Rides, Street, Racing
November 28, 2012
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Product Style Item # Manufacturer Product # Availability
Black / SM 1137793 683590 In Stock: Ships next business day
Black / MD 1137794 683591 In Stock: Ships next business day
Black / LG 1137795 683592 In Stock: Ships next business day
Black / XL 1137796 683593 In Stock: Ships next business day
Black / 4XL 1137797 788169 In Stock: Ships next business day
Black / 2XL 1137798 788176 In Stock: Ships next business day
Black / 3XL 1137799 788177 In Stock: Ships next business day