in a crib that’s free from soft items that could cause suffocation (comforters, baby bumpers, blankets, toys) Because of the angle created by an inclined sleeper, the risk is that your baby’s airway can become obstructed. This can include their heads slumping forward in a chin-to-chest position that can make breathing difficult. Another concern is that babies may potentially roll or shift, which can cause suffocation if their faces are pressed against the padding. This risk is especially of concern because very young babies have a harder time moving their heads out of an unsafe position. And another fear is that very active sleepers may roll completely out of an inclined sleeper and get injured either by the fall or by tipping the inclined sleeper over and being trapped beneath it.