If a portable
crib / play yard or bassinet is to be used, it should meet the following CPSC guidelines: (1) sturdy
bottom and wide base; (2) smooth surfaces without protruding hardware; (3) legs with locks to prevent folding while in use; and (4) firm, snugly fitting mattress.121 In addition, other AAP guidelines for safe sleep, including supine positioning and avoidance of
soft objects and loose bedding, should be followed.