Blizzard Stormbird 7.7 Men’s Frontside Skis. The Stormbird 7.7 blends just the right amount sidecut and early-rise shape in the tip and tail in a 77mm waisted ski. Intended to allow you to open new opportunities on the mountain by being both accessible and confident. With a perfectly smooth and intuitive flex to deliver the right amount of performance for intermediate skiers to have the complete confidence and control to effortlessly Unlock Their Turn. Range : 75 to 84. Best Use : Snowsports, All Mountain Skiing. Waist Width (mm) : 77. Tip Width (mm) : 121. Tail Width (mm) : 103.