Based on the foundation of the Thunderbird R15-82 -- this comp version is gassed up with a stronger sidewall, metal binding bridge and comp binding. At 82mm underfoot -- the Thunderbird R15-82 boasts the widest platform in our frontside collection. A versatile, confident ski that is not intimidated by varying conditions on your favorite groomed slope. Blizzard's TrueBlend Piste woodcore has a unique knack for supplying performance-on-demand while not being overly demanding so you can ski longer into the day at full strength.