Item #: N/A

Whether you’ve undergone ankle issues or just need some extra stiffness added for support, these are the perfect boot for you.



Sometimes you need the stability of a plastic mountaineering boot for those steep rigid climbs, but if you’ve ever worn them you know they’re not the most comfortable. The Guide Ultra 400 gives you the best of both worlds. Built with the EverStep technology to give you an ultra-support system, double durability and the all-day comfort of a Kenetrek boot. The removable brace system is added to the uppers of the classic Guide Boot and paired with a one-piece, deep lug traction, super-stable K-73™ outsole.

  • 10″ tall 2.8mm thick premium full-grain leather uppers that utilize a one-piece vamp construction with no seams down the tongue for abrasion resistance and waterproofness.
  • Reinforced double and triple stitching in high wear areas
  • 7mm nylon midsoles for extra support with heavy pack loads
  • Anti-corrosion boot hardware that swivels instead of breaking
  • Reinforced rubber sole guard for extra abrasion resistance
  • 400 gram Thinsulate™ insulation for warmth without the bulk
  • Windtex® waterproof breathable flexible membrane
  • Custom K-73™ outsoles provide excellent traction and durability
  • EverStep® removable nylon braces provide additional ankle support for heavy pack loads in rough terrain
  • Made in Italy. 4.8lbs.
  • Kenetrek Men’s Foot Sizing Chart

First pair of Kenetrek Boots or curious how a pair of hiking boots are supposed to fit? Kenetrek’s Boot Fitting Tips is a great resource to read through.

Looking for a non-insulated boot? The Guide Ultra NI is great boot that provides the same support and durability.

Weight 5.4 lbs
Dimensions 15.75 × 13.75 × 5 in