Are you wearing ski boots?
B3's for C3 crampons surely?
Shrug. Looks like there's ski boot buckles on the outside of them. And you can get ski boot crampons hence the question.
FYI I have no idea what I'm talking about.
I guess. Solid unflexible sole shared I think?
I'm not a skier but if there are bindings that share/duplicate a ski and C3 crampon design I'd not be unsurprised.
@JB started
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B3's for C3 crampons surely?