Hmm, I just sold one of these and I'm pretty sure the waist was closer to 25cm, maybe even a touch below. I know the Tankers sized in the "7's" 167, 187 etc. were wide waist models. The "2's" were narrower. I also had 172's from successive years, and this year was even slightly narrower from the next, when they switched from the Elan to the Volkl factory. Bottom line, solid board.