Why your baby needs one more layer than you do

Society · Published 26 October 2026 Swipe more like this →

In short: Dressing a newborn is a delicate balance between comfort and safety. Because infants struggle to regulate their own body temperature, they are prone to overheating more easily than adults. Mastering the art of layering requires understanding specific fabrics, movements, and historical context to keep your baby safe and cozy.

The fundamental rule for dressing a baby is to provide one more layer of clothing than the adult is wearing. For example, if an adult is comfortable in a t-shirt and a jumper, the baby should be dressed in a vest, sleepsuit, and a cardigan or jumper. Infants struggle to maintain steady body heat, meaning heavy bedding or garments might cause them to become too warm rapidly. Conversely, research indicates that babies are safer when they are slightly cooler than when they are too hot, as overheating increases the risk of Sudden Infant Death Syndrome (SIDS).

Safety and material choice are paramount. Experts recommend soft cotton for its breathability, especially in summer when a single lightweight layer is often sufficient. Parents should avoid items with buttons, appliqués, ribbons, or strings that could come loose or wrap around a baby's limbs or neck. Rough inside seams should also be avoided to prevent skin irritation. When dressing, it is safer to lie the baby on a flat surface like a bed or a blanket on the floor, as changing tables are often not roomy enough for safe maneuvering.

Techniques vary based on the baby's age and activity. For infants with unhealed belly buttons, kimono-style tops with side snaps are ideal. For older, more active babies, tops that snap at the crotch (like onesies) help keep the garment tucked in. When outdoors, babies under six months must be kept out of direct sunlight due to low melanin levels; a wide-brimmed hat and a pram sunshade are essential. This modern approach to mobility and safety stands in stark contrast to the 1600s, when American babies were often wrapped so tightly they were immobilized from head to toe.

General information, not professional advice. Spotted an error? Flag the card or see corrections and complaints.

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