NOS Vintage Selle Royal childs children junior tricycle bicyle saddle seat ... in super condition , post has 5/16'' diameter. ***FREE SHIPPING !!! WITHIN USA & CANADA*** ------------------------------------------------------------------------------------------------------ Check out my store for more vintage bicycle parts !!!Contact me if you have any question ???Shipping within Canada and United States is FREE !!! Buyer from other countries "must" contact me before buying for shipping cost. Thanks for looking !!!