Fierce GTX BOA Woman Boots by Klim

Fierce GTX BOA® Boot — Built for Women Who Ride Through Winter, Not Around It

When the temps drop and the trail turns brutal, the Fierce GTX BOA® Boot keeps you warm, dry, and confidently moving forward. Designed specifically for women who demand real performance, this boot delivers serious insulation, all-day comfort, and rock-solid durability — without sacrificing agility on or off the sled.

With 1,000 g of 3M™ Thinsulate™, a fully insulated insole, and guaranteed-waterproof GORE-TEX construction, the Fierce GTX traps heat and blocks moisture like nothing else. Add in the custom-developed Michelin® outsole engineered for traction on icy terrain, and you get the grip and stability you need when the trail gets sketchy.

The BOA® M-Series lacing system delivers a fast, precise fit every single time — even with cold hands — and the open lace path sheds ice and snow instead of collecting it. Inside, a plush fleece liner and O-Therm aerogel insole keep warmth where it belongs while maintaining breathability and all-day comfort.

Why Riders Love It

• GORE-TEX waterproofing keeps insulation dry and effective
• 1,000 g Thinsulate™ for extreme cold protection
• Michelin® rubber outsole for unmatched grip on ice
• BOA® lacing system = quick, even, micro-adjustable fit
• Reinforced leather upper and rubber toe for long-term durability
• Plush, breathable fleece liner that stays warm even on long rides
• EVA midsole + ergonomic tongue = serious walking comfort
• Removable aerogel-insulated Ortholite O-Therm insole
• Includes half-size insert for perfect fit
• D-ring for pant retention + heel loop for easy entry