Your little boy or girl might want to feel like a big kid, but isn't quite ready for their own new bed yet. That's why the Stanley Furniture Smiling Hill Built-to-Grow Toddler Bed Conversion Rail Kit is designed to convert your existing Smiling Hill Built-to-Grow 3-in-1 crib into a toddler bed. The rail helps prevent them from rolling out of bed, but still gives them the freedom to get up and out on their own. Thick poplar hardwood is used to craft the rails, topped by lovely birch veneers. Choose from available finish options. Necessary installation hardware is included.