175cm Blizzard "Sigma FR 18" all-mountain twin-tip skis for sale. With Blizzard's triaxial torsion box design & shock absorber plates, the Sigma FR 18 is a responsive, smooth, all-round all-terrain performer. The side-cut is 110/72/97 and the designed turn radius is 18m. Used, but in good condition. C/w Tyrolia SP8 (full diagonal release) bindings with a 3 to 11 DIN range. These bindings are fitted to SymPro plate system that allows you to quickly adjust the toe & heal piece (to fit most boot sizes) quickly & easily (without the need for special tools :)