I was skeptical that they would be as warm as plastic and still be rigid enough to do sustained vertical ice but I can safely say that they are. As for warmth, I went out last winter on a –35c day for some modest mixed climbing and lower grade rock climbing and found them to work much better that any other boot I have ever owned my feet were warm and dry. They are quite waterproof and I have yet to have wet feet with them. If I was using them on a multi-day climb in very cold conditions they I would use some form of vapour barrier between the socks and the boots to keep them from getting wet from the inside out. All in all they are well worth the price and I can say they truly offer the all the performance and warmth of plastics with the benefits of leather boots. They do take a while to break in however and there are quite expensive.

Customer Service

The after sales service is great and the got back to me by phone for a simple lacing question I had within 1 hour of me sending the email.

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