1) It has a notched blade 2) Use a cold rink 
Figure skates are a type of ice skate used by figure skaters. The skates consist of a boot and a blade that is attached with screws to the sole of the boot. Inexpensive sets for recreational skaters are available, but most figure skaters purchase boots and blades separately and have the blades mounted by a professional skate technician. ==History=...
(from the article `figure skating`) Skaters wear leather boots, sometimes custom-fitted, reinforced with thick padding to brace the ankle and with wide tongues for control and ...
[v] - dance on skates
noun an ice skate worn for figure skating; has a slightly curved blade and a row of jagged points at the front of the blade
a shoe skate used in figure skating, esp. one having a blade shorter than that of a racing skate, usually not extending beyond the toe or heel, and with notches or sawteeth on the curved forward edge. Cf. racing skate.