The Skike v8 Lift series, is the newest series of Skikes, and builds upon the previous models with a lift system that allows the heal to leave the ski platform, similar to that of a nordic ski boot and ski. This allows both wheels to stay in contact with the ground when skating and with some models that have a ratcheting bearing assembly, allows the Skiker to use a classical ski technique.
Most models of the lift series use pneumatic tires that work well on a variety of surfaces. I have found that they grip well on the many different surfaces and surface conditions, including the crushed limestone trails found in Pennsylvania.
Contact Skike Pennsylvania or stop by at the Tandem Connection sometime to check a pair out.