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The quick verdict: BFC stands for Built For Comfort, and it delivers: the easiest step-in entry in the category, a heat-moldable shell, and GripWalk soles at a beginner price. Comfort first, no apologies. ~$400 list, typically ~$300-350
The BFC 80 is the benchmark ease-of-use ski boot, and the honest replacement for putting an expert boot in a beginner guide. Its party trick is Hands Free Entry: a softer TPU panel over the instep lets you step in and out without wrestling the shell open by hand, which anyone who has fought a cold boot at 8am will appreciate. The 103mm last is wide and roomy, the CushFit liner is genuinely plush, and both shell and cuff are heat-moldable for fine-tuning. Switchback Travel's beginner-boot guide calls it a great boot for hard-to-fit feet at a competitive price. The women's version is the K2 BFC 75 W, same concept at a softer 75 flex.
Beginners and casual skiers with wide or hard-to-fit feet who rank comfort and convenience first. Skiers progressing toward harder carving should step to the Salomon S/Pro Supra 90 GW or Nordica Speedmachine 3 100 instead.
See where it fits in our Ski Boot Sizing Guide. Other boots from that guide: Rossignol Evo 70 HV+ · Salomon S/Pro Supra 90 GW · Nordica Speedmachine 3 100 · Atomic Hawx Magna 90X GW. Want easy entry with expert power? That is the Dalbello Cabrio MV 130.