Arc’teryx say: “A pinnacle of design for mountaineering, ice and mixed climbing, the Acrux AR is the lightest, most durable, and lowest profile insulated double boot available.”
Arc’teryx Acrux AR
The Acrux AR is a low-profile double boot suitable for all-around winter and alpine use. Overall size is similar to single gaitered boots but with slightly more warmth than those models. Fit tends towards the narrower so is particularly well suited to lower volume feet and women.
Read the full preview here.