I've just procured the Atomic Redster 130 Pro boot. The Redster line has a feature called "cuff rotation" that permits the upper cuff to be rotated 5 degrees in both directions. It's a distinct feature from the cuff alignment feature permitting the cuff to be to matched to the angle of the leg, which, is standard on many boots, including the Redsters.
Atomic literature does a poor job of describing the uses of "cuff rotation" other than claiming " it permits the knee to track over and to the inside the ski" (my words not Atomics ). I've heard claims that it can reduce the need for boot canting or other bootfitting modifications. I've viewed several video's on youtube touting the boot, but, there is little in-depth discussion about this feature. Atomic's website does not provide any substantive information. C'mon Atomic, if it;s so great, tell us how to use it.
Can anybody explain this feature?