The Unique uses a polonium lightweight wood core and 'air channels' to keep the weight down and also has a large side cut for ease of turning and performance.
However our tester found the ski a bit 'waffy' for want of a better word. Edge grip on ice was pretty poor and they were chattery at speed, but they are easy to turn.
They'd work for a lady who likes to cruise about and is less aggressive - definitely more of a ski for a relaxed intermediate skier.