Safe Sleep for Babies: The ABCs, Room Setup, and Getting Through the First Year

The American Academy of Pediatrics summarizes infant safe sleep guidance with three simple ideas: babies should sleep Alone, on their Back, and in a Crib or other approved sleep surface. That short rule handles the majority of sleep-related risk during the first year.

'Alone' means no adults, siblings, pillows, blankets, bumper pads, positioners, or stuffed animals in the sleep space. 'On the back' applies for every sleep — naps and overnight — until the baby can reliably roll both ways on their own. 'In a crib' means a firm, flat, approved sleep surface with a fitted sheet, not a couch, adult bed, or car seat for routine sleep.

Room sharing without bed sharing is recommended for at least the first six months. Keep the bassinet or crib in the parents' room with a clear separation between the adult sleep space and the baby's.

Use a crib, bassinet, play yard, or bedside sleeper that meets current safety standards. Avoid secondhand sleep products unless you can verify the model, check for recalls, and confirm that no parts are missing or broken. Drop-side cribs manufactured before the 2011 ban should not be used.

Set up the nursery with the crib away from windows, blind cords, curtains, and wall décor that could fall. Mobiles and crib toys should be out of reach once the baby can push up onto hands and knees. Anchor any dressers or bookshelves in the room, and keep the changing table against a wall.

Skip inclined sleepers, wedges, and positioners — they have been linked to infant deaths and are not recommended by pediatric sleep guidance. If you are considering a sleep product and are not sure it is safe, the simplest filter is whether it provides a firm, flat, bare surface.

Blankets are not recommended in the crib for babies under one year. Instead, dress your baby in a wearable blanket or sleep sack appropriate for the room temperature. A good rule of thumb is one more light layer than an adult would wear comfortably in the same room.

Swaddling is fine for young infants as long as it is snug at the chest and loose at the hips. Stop swaddling as soon as your baby shows any sign of rolling — typically between two and four months. Once rolling starts, move to a sleep sack that leaves the arms free.

Overheating is a known risk factor for sleep-related infant death. Keep the room at a comfortable temperature, avoid hats indoors, and check the back of the neck or chest to gauge warmth rather than the hands or feet.

Safe sleep rules apply everywhere — not just at home. Travel cribs and play yards that meet current standards are the go-to sleep surface for hotels, Airbnbs, and family homes. Adult beds, couches, and unfamiliar cribs introduce risks that a familiar, approved sleep surface avoids.

Brief every caregiver clearly. Grandparents, babysitters, and daycare providers may have grown up with different guidance, and gentle specifics — 'on the back, nothing in the crib' — carry better than general requests. Many daycares have written safe sleep policies; ask to review it when you enroll.

Car seats, swings, and carriers are not recommended for routine sleep. If your baby falls asleep in one, move them to a flat sleep surface when you can do so safely.