IDT Skate is a very popular roller ski in Europe developed together with national teams. This is the special Klaebo Gold edition. IDT Skate is available in different lengths with this being their shorter length. IDT makes speed 1, 2 and 3 where 1 is the fastest and 4 is the slowest. At RollerskiShop.com we carry IDT speed 2 and 3. 2 is the most common speed and is used by default.