CPSC and ASTM are commonly seen throughout crib product listings. Not all of them have it, but the most popular ones usually do. It's complicated, lengthy, and sometimes a costly process to go thru. I take great confidence in a crib if a manufacturer went thru all that trouble to get these certifications. CPSC = U.S. Consumer Product Safety Commission ASTM = American Society for Testing and Materials The CPSC and ASTM focus on crib structural safety. Things such as width of bars on a crib so baby can't get head stuck in it, parts that move that could trap or hurt a babies legs or arms, etc. It doesn't have any emphasis on toxicity in things such as paint, glues, etc.  I greatly recommend that the only crib you buy is one that has both of these certifications.