The World's Toughest Winter Boots

Bunny Boots with VBX Technology use a sealed waterproof barrier that keeps insulation completely dry—meaning lasting warmth and comfort no matter what. Built to perform after being submerged in icy water and to endure countless hours of wear, they’re the most resilient boots on the planet.

Bunny BOOT LINEUP

Everyday Warmth

The VBX LITE is a lightweight, low-profile boot designed for daily winter wear—great for commuting, walking, or casual adventures down to 0°F.

  • Shorter Shaft
  • Decreased Bulk
  • Designed For Everyday Wear

Active Winter Missions

The VBX Bunny Boot is an Arctic Grade design that balances weight and insulation, built for active winter missions and capable of keeping feet warm between -40°F and -70°F depending on activity level and individual physiology.

  • Arctic Grade Performance
  • Balanced Weight To Insulation
  • Designed For Active Users

Deep Cold Performance

The VBX MAX is an Arctic Grade boot with heavy-duty insulation and a robust build—designed for stationary activities in extreme cold where conserving body heat is mission critical, performing reliably between -40°F and -70°F.

  • High-tenacity ripstop exterior
  • Stove-jack with heat-shield panel
  • Quick-pitch hub architecture

Rugged Four-Season Shelter

The VBX Composite is a PPE-certified Arctic Grade boot built for winter work sites, featuring a composite toe, puncture-resistant plate, and slip-resistant sole, with thick insulation to keep feet warm between -40°F and -70°F.

  • ASTM Rated
  • Composite Toe
  • Arctic Grade Coldweather Protection

Vapor Barrier X Technology

Cold-weather boots use insulation to create a thermal barrier to keep your body heat in and the cold out. However, wet insulation kills heat retention, which is why many winter boots have waterproof features to combat this critical weakness.

Exterior waterproofing alone isn't enough. When cold-weather boots work well, your feet sweat, and that interior moisture penetrates the insulation. Over time, this leads to significant heat loss.

Vapor Barrier X™ technology seals the insulation between two waterproof layers. keeping insulation completely dry, preserving the thermal barrier, and keeping your feet warm for countless hours in any condition.

❄️ Bunny Boot Cold Index ❄️

The Bunny Boot Rating Scale compares modern insulated boots against the original Extreme Cold Weather Vapor Barrier Boot (White Bunny Boot). Independent laboratory testing measured CLO insulation values to calculate relative heat retention.
Baseline: Original ECVB Boot rated effective from -20°F to -65°F = 1.00 rating

Temperature Range Comparison

-10°F
-30°F
-50°F
-70°F
-90°F
🥾 Original ECVB Boot (Baseline)
1.00
-20°F to -65°F
Warmest Effective Temp
-20.0°F
Coldest Effective Temp
-65.0°F
Midpoint
-42.5°F
🥾 VBX Bunny Boot
1.15
-23°F to -75°F
Warmest Effective Temp
-23.0°F
Coldest Effective Temp
-74.8°F
Midpoint
-48.9°F
🥾 VBX MAX
1.37
-27°F to -89°F
Warmest Effective Temp
-27.4°F
Coldest Effective Temp
-89.1°F
Midpoint
-58.3°F
🥾 VBX Composite
1.29
-26°F to -84°F
Warmest Effective Temp
-25.8°F
Coldest Effective Temp
-83.9°F
Midpoint
-54.9°F

Rating Scale: Values above 1.00 retain more heat (colder comfort range) • Values below 1.00 provide less insulation (milder cold range)