2025 Blizzard Thunderbird 7.7 Skis w Marker 11.0 Binds. About the Blizzard Men’s Thunderbird SP 7.7 Snow Skis with TPC 11 Bindings’25. Control equals confidence, confidence equals fun and fun equals a great day on the mountain. The Thunderbird Sport 7.7 blends just the right amount sidecut and early-rise shape in the tip and tail, with a perfectly smooth easy flex to deliver the right amount performance for the intermediate level skier have the complete confidence and control to effortlessly explore the mountain. The wider 77mm waist helps provide more stability and maneuverability when the snow gets a little softer and little fresher.