The Ariel Convertible Crib features clean lines and beveled edge trim for a traditional look that will suit baby boys and girls. Constructed of solid wood and wood products it's built to last with a stationary side rail. It features an adjustable one piece mattress support and it's easy to assembly. This piece starts out as a crib and will convert into a full-size bed with a headboard and footboard. The instructions are permanently attached so when it comes time to make the switch you won't be wondering where you put them.What is JPMA?Since 1959 JPMA or Juvenile Manufacturers Association has been a leader in developing juvenile product safety standards and a certification program to ensure products are built with safety in mind. JPMA works with government and consumer groups as well as industry leaders on programs that educate consumers on safe selection of baby and kids products.