The word I didn't tell you while last calling

Hi Leah I want to  explain  something about what I  told yesterday's class. Last sunday, I visited my older sister's home My older sister gave me play equipment, It's called TRIDER in korea It's smiliar to kickboard,There are  differences between trider and kickboard, trider has three wheels and two foothold but kickboard has two wheels and just on foothold my childen was greatly pleased to get a trider if you don't understand , click below website http://ecx.images-amazon.com/images/I/41wHt%2BXjN6L._SX425_.jpg I wonder what do you call it? Thank you.