This is a wonderful feature to make your convertible crib a twin/full size bed (so you can get more bang for your buck), but we have purchased two (for each convertible crib) and when the time was right to transition into a full bed, the conversion kit did NOT have the parts included (they missed it). So, even if you don't need it at the time, open up the box and make sure you have what you need for years later (just incase they no  longer make the kit when you're ready, you'll have what you need!) Also, it converts permanently so if you move the bed (out of the room or into another house and need to make it smaller), you may not have the best fit when you put it back together.

Pros: Easy, provides longer use of your convertible crib
Cons: May not have all the necessary parts, changes the bed to be permanently twin/full