A crib may include: an upper frame; an enclosure made of flexible material, connected to the upper frame and having an openable side; a lower frame connected to the upper frame and configured to support a mattress; and two guides. The upper frame may include a first portion, connected to the lower frame and having two first ends, and a second portion, movable relative to the first portion and having two second ends. The upper frame may be switched between a closed configuration, in which the second ends are locked with respect to the first ends, and an open configuration, in which the second portion is spaced from the first ends. The guides may extend from the first portion of the upper frame toward the lower frame. The second ends may be configured to slide along a respective guide to move from the closed to the open configuration.