The 2018 Roxa RXW 1.0 is a true backcountry ascender with a minimalist design (2 buckles) and is well-suited for long approaches.
The RXW fits with a bit more forgiveness than other narrow 3-piece boots in the Roxa range (i.e. R3W), which testers appreciated for a potentially warmer touring environment, though they thought the heel pocket was particularly relaxed, which didn't impress. They noted that the tongue at boot top is a little firmer than desired.
The lower boot had a nice feel for the snow and transmitted edging movements to the ski adequately, but testers said that the cuff felt upright and soft and generally left the lower leg disconnected from communication with the ski. They did like the easy to grab oversized (and carbon reinforced) cuff release switch.
The top buckle offers Velcro strap fine-tuning. Two liner pull loops help with tugging this one on.