The Reston collection is featured in Twin and Full, with posts that measure 2.5" x 2.5". This platform design does not require a box spring. All rails are connected to the posts by heat treated bolts and half moon nuts. Slat foundation is well glued and nailed with no staples. Palace Imports, Inc. takes safety very seriously, especially when the end users are children, and is in compliance with all the current laws and regulations. Our products are made of solid home grown Brazilian Pine. Twin Trundles Included.