The Rip Board (Ripstik /wave board) caster brings the carving thrill of surfing and snowboarding to dry land. A simple weight transfer lets you turn or accelerate without pushing, just like when you're carving down the slopes. With 360 degree inclined casters and pivoting deck the Wave Board provides an impressive carving motion
http://www.ripboard.co.uk
http://www.playengine.co.uk