My suggestion is DO NOT USE IT!!! Since slats are now closer together, they are unnecessary and dangerous! They are shown in baby stores in order to try to get parents to spend more money. "They are so cute," the make the set look more complete, whatever. The use of bumper pads has been linked to SIDS. It may not result in your baby's death, but WHY take a chance!??!!
Direct quote from SIDS.org website: "Place infants to sleep in a baby bed with a firm mattress. There should be nothing in the bed but the baby - no covers, no pillows, NO BUMPER PADS, no positioning devices and no toys. Soft mattresses and heavy covering are associated with the risk for SIDS."
PLEASE read these articles:
http://www.sids.org/nprevent.htm
http://babyproducts.about.com/od/recallsandsafety/a/bumpe...
http://www.sciencedaily.com/releases/2007/09/070918165353...