Sale: $199.00 - Retail: $1100.00 The flex rating of this boot suggest there is some ability to flex it, but most skiers will find that its lack of flex is pretty difficult to deal with. Only if the skier using this boot is extremely aggressive, and attacks the mountain like a racer does- full speed all the time with full effort at every turn, is this boot an an appropriate match. Don’t get this boot for casual cruising or even advanced skiing. The Worldcup Pro 150 is for the aggressive, elite skier that is looking for minimal flex in their boots.