Suitable for newborn to 5 months. Hangs inside your baby's cot with adjustable straps which means you can raise it at one end to assist with colic. Gently moves when baby moves to assist with sleep. Mattress is wrapped in a Baby Safe cover as per a Dr Sprott cover to prevent any gas from the mattress reaching your baby. Also incl is the hard board the mattress sits on. I purposely put a small hole in bottom of canvas of bassinet that i could thread my angel care monitor cord through underneath. Does not affect the bassinet at all. See pic. Smoke free home. Pick up Red Beach