Sleepytroll - Gen2 Crib Adapter.Sleepytroll - Crib Adapter Babies sleep better when they are rocked, and now you can mount the Sleepytroll baby rocker on your crib as well. The adapter, together with the Sleepytroll feet (special covers for the crib legs, which are sold separately), will turn your baby's crib into a cradle. • The crib adapter should be mounted on the top rail of the long side of the crib. Mounting the adapter on rails with other cross-sections (round, circular) will not be saf