Cot mobiles are perfect when putting your baby to bed. Often used in sleep training as a sleep aid or sleep cue your baby can relax in the cot listening to soothing tunes. Skip Hop cot mobiles attach to the side of the cot and soothe baby with sweet songs, nature sounds even your recorded voice. This soft bedtime friend features an innovative cry-activated smart sensor that automatically responds to babies cries to comfort baby no matter where they are. Cot mobiles can stimulate learning with engaging images and shapes projected on the nursery ceiling or wall.