Alpina Sports Discovery Cross-Country Backcountry Skis Wood core fiberglass cap construction for resilience and long life - sift double camber is perfect for touring in mixed snow conditions Full Length Metal Edges provide control 68mm-60mm-65mm side cut in perfect for off track skiing such as logging roads and wider trails Sollte non-wax positive grip base pattern for excellent grip Alpina Solution sizing system: Available in 160cm, 170cm, 180cm, and 190cm