A baby sleeps in a baby hammock (jhoola). Experts recommend that it is safest for your baby to sleep on his back, on a firm sleep surface. It's best to put your baby in a separate cot. in India, and many parents often choose to use a traditional baby hammock (jhoola) or rocking cradle (palna) instead of a cot. These have been used for generations and even though their design (curved base and soft mattress). The traditional jhoola is essentially a cloth hammock fashioned from cotton fabric, sarees, rope or cane attached to a spring and strung up on ceiling beams or the bars of the staircase.