no ironically enough my bindings are set up for a 315 sole but my boots are ones i got cheap a long time ago and have always been to big, i got fitted for a 26.0 1080 boot which has a 305 sole so if the 27s had the same 305mm shell i was gonna get em and then put in the smaller liners down the road whenever i could get the money. sorry man id really like to snag a pair this nice for that price. free bump