SAFETY FIRST. ALWAYS. - This crib is JPMA Certified to meet or exceed all safety standards set by the CPSC and ASTM. All of our products are tested by 3rd party labs for lead and other toxic elements to meet or exceed CPSC and ASTM safety standards 5-IN-1 CONVERTIBLE CRIB - A lifetime investment, the Synergy grows with your child, easily converting from a crib into a toddler, day and full-size bed; Toddler guardrail, stabilizer and full-size rail sold separately. Features 3 mattress height settings 13 ATTRACTIVE FINISHES - Bring your nursery dreams to life with the Synergy. Whether you are thinking of creating an ocean-themed nursery, a whimsical mermaid themed nursery or a minimalist modern nursery, the Synergy gives wings to your imagination OUR CRIBS ARE BUILT TO LAST - Constructed out of solid reclaimed New Zealand Pine wood, the Synergy is a durable crib that will last you a lifetime. With a classic design, this crib offers your little one a sleeping space that will never go out of style MATTRESS COMPATIBILITY - The Synergy 5-in-1 Convertible Crib is a standard full size crib and measures 53.0" L x 29.0" W x 39.0" H inches. For the best fit, we recommend any Dream On Me or Evolur full-size, non-toxic, Greenguard certified mattress