Baby blankets: what to look for at each age

Baby blankets are among the most-gifted, most-bought, and most-misused items in any nursery. They're also one of the categories where terminology gets confused, with "muslin square" and "muslin wrap" used interchangeably even though they're different products with different safety standards. This guide covers what to buy, when to use it, and how to keep your baby safe.

The safe-sleep basics: when blankets belong in the cot

This is the most important part of the post, so it goes first. Plunket and Ministry of Health guidance for safe sleep in the first year:

• No loose blankets in the cot for babies under 12 months. Loose bedding is a known SIDS risk factor.
• Use a sleep bag (also called a sleep sack) rated for the room temperature.
• Swaddles are different. A properly-fitted swaddle wrap, used until your baby starts to roll, is considered safe. Swaddle wraps are a regulated sleepwear product in New Zealand, sold separately from muslin squares. Check the label for safe-sleep certification.
• From 12 months onwards, a light blanket in the cot is generally fine, though many parents stay with sleep bags well into the toddler years.

Should you put blankets on newborns?

Not in the cot, no. For everywhere else (the pram, the car seat over the harness, on the play mat, while feeding), light cloth covers are useful. The cot is the one place where loose blankets aren't safe in the first year.

Can my 2-month-old sleep with a blanket?

No. The safe-sleep guidance for the first 12 months applies regardless of how cold the night feels. Add a warmer layer (long-sleeve bodysuit, higher tog sleep bag) instead. Our baby onesies NZ guide covers the difference between bodysuits and footed sleepsuits and what to layer at different ages.

When can a baby have a baby blanket?

From around 12 months, once the SIDS risk window has passed and your baby is rolling and moving freely. Before then, blankets are for awake use and out-of-cot situations only.

Muslin squares vs muslin wraps: what's the difference?

The two terms get used interchangeably, but they're not the same product.

Muslin square. A smaller cloth (typically around 70x70cm), made from soft cotton muslin. Used for feeding cover, burping cloth, light pram or play mat cover, and general cleanup. Not for sleep or swaddling.

Muslin wrap. A larger swaddle wrap (typically 100x120cm or bigger), designed and regulated as a baby sleepwear product. Used for swaddling newborns until they start to roll. Sold with safe-sleep certification.

If you're shopping for a swaddle wrap for sleep, look for a product specifically labelled as a swaddle or wrap, with the relevant safe-sleep certification. Muslin squares are a different product and are not a substitute.

What's the most useful muslin product for a newborn?

A pack of muslin squares. They get more use than any other cloth in the nursery. The main everyday uses:

• Feeding cover. Lightweight and breathable, ideal in NZ summer.
• Burping cloth. A folded muslin square doubles as a high-absorbency burp cloth.
• Play mat or pram cover. Drape lightly over a play mat or pram canopy for shade. Never directly over a baby's face.
• Cleanup cloth. Spit-up, drool, milk, mess of all kinds.
• Light cover during awake time. Useful at home, in cafes, on the go.

For sleep coverage in the first year, use a sleep bag rated for the room temperature instead.

The four main blanket types

Muslin square. Small, lightweight, loose-weave cotton (or organic cotton). The everyday cleanup and feeding cloth. Awake-time use only.

Muslin wrap (swaddle). Larger, sized for swaddling. Sold as a regulated sleep product. Used until your baby starts trying to roll.

Cellular blanket. A loose, holed-weave blanket designed to be breathable. Good as a pram or play-time layer. Not for the cot in the first year.

Knitted blanket. Thicker, warmer, often given as a gift. Pram blanket in winter, play mat layer, or keepsake. Not for the cot in the first year.

Cot blanket. A heavier blanket sized for a cot. Best used from 12 months onwards. Often a quality piece that becomes a toddler's favourite.

How long do muslin squares get used for?

The first 6 months heavily, then for years afterwards. Feeding and burping uses drop off as your baby moves to solids, but muslin squares still get used as pram covers, picnic blankets, play mat layers, and shade screens. Most parents keep a couple even after their child is a toddler.

Fabrics: what to look for, what to avoid

Cotton and organic cotton. The safe defaults. Breathable, soft, easy to wash, hypoallergenic. Organic cotton is grown without synthetic pesticides and processed without harsh chemicals, which is why it is the standard for newborn skin.

Cotton knit and cellular cotton. Warmer options for pram and outdoor use in cooler weather. Breathable and washable, which synthetic fleece is not.

Bamboo. Soft and breathable. Often blended with cotton.

Acrylic and polyester fleece. Skip for newborns. Don't breathe, hold moisture against the skin, contribute to overheating.

How many baby blankets do you actually need?

A reasonable starting set for a newborn:

• 4-6 muslin squares (the workhorses for feeding and cleanup)
• 1-2 cellular blankets for the pram
• 1 knitted blanket for outdoor walks in winter
• 1 cot blanket put away until baby is over 12 months
• If you plan to swaddle, 1-2 dedicated swaddle wraps with safe-sleep certification

Most parents end up with more than this through gifts. That's fine. The muslin squares will get used the most by a wide margin.

Caring for baby blankets and muslin

Wash before first use. Most baby cloth softens with washing. Use a gentle detergent without strong fragrance, especially for newborn skin. Tumble drying is fine for muslin and cellular blankets. Air-dry knitted pieces to keep their shape. Skip fabric softener: it coats fibres and reduces breathability.

Shop muslin squares and accessories at Yes Mila

Yes Mila's organic muslin squares are made from certified organic cotton, designed in Europe, and get softer with every wash. Used for feeding, burping and everyday cleanups. The range also includes muslin bucket hats and bandana bibs in our signature hand-drawn prints.

Browse our organic muslin range, or see baby essentials for everything else a newborn needs. For the full picture, browse our complete baby collection. Free shipping on orders over $100.

For more on dressing your newborn safely, see our newborn clothes guide. For NZ-specific hat guidance (winter beanies vs summer sun hats), see our baby hats NZ guide.