A beautifully made cot is tempting to fill with soft blankets, a tiny pillow and a favourite cuddly toy. For a new baby, though, the most comfortable sleep space is also the simplest one. This baby bedding buying guide helps you choose the useful essentials, understand fabrics and sizes, and create a cot that is easy to keep fresh through the many little spills of family life.
Start with a clear, simple cot
For the first year, current safer sleep guidance is clear: babies should sleep on their back in their own clear, flat and firm sleep space. That means no pillows, duvets, cot bumpers, nests, loose blankets, soft toys or sheepskins in the cot. These items may look cosy, but they can create a risk for a sleeping baby.
The mattress should fit the cot or cot bed with no gaps at the sides, and it should be firm, flat, clean and waterproof. Bedding is there to keep the mattress protected and your baby comfortably dressed for the room temperature, not to create a padded sleeping area.
This approach can feel surprisingly minimal when you are preparing a nursery. In practice, it is reassuringly practical. A clear cot is quicker to make, easier to check and gives your little one the safe, uncluttered space they need.
The baby bedding buying guide: the core essentials
A small collection of well-chosen pieces will take you much further than a cupboard full of novelty bedding. Start with two or three fitted cot sheets and at least one waterproof mattress protector. This gives you a clean replacement ready when needed, without making wash day feel urgent.
A fitted sheet should match the mattress dimensions exactly. Cot mattresses are commonly around 60 x 120 cm, while cot bed mattresses are often around 70 x 140 cm, but always measure your own mattress before ordering. A sheet that is too large can come loose and bunch up, while one that is too tight is difficult to fit and may wear more quickly.
A waterproof mattress protector is one of the hardest-working items in the nursery. It helps guard against nappy leaks, milk spills and the realities of teething and illness. Look for a protector designed to sit smoothly beneath the fitted sheet, ideally with a breathable surface that does not feel crinkly or overly warm.
For warmth, use either a suitable baby sleeping bag or lightweight cellular blankets tucked in securely below shoulder level, according to your baby’s age and the room conditions. Sleeping bags are popular because they cannot be kicked off in the night, but they must be the right size and tog rating. Never use an adult duvet or pillow for a baby under one year old.
Choose fabrics that feel good and wash well
Cot bedding spends a great deal of time against delicate skin, so fabric matters. Cotton remains a dependable choice for fitted sheets and blankets because it is soft, breathable and straightforward to wash. A good-quality cotton sheet can also stand up to frequent laundering, which is valuable in the first months.
Jersey cotton has a naturally stretchy feel and can be especially easy to pull over a cot mattress. Woven cotton is crisp, cool and often gives the neat finish many parents like. Neither is automatically better - it comes down to the feel you prefer and how the sheet fits your mattress.
If your baby has sensitive skin, keep the first bedding set uncomplicated. Choose soft, breathable fabrics and wash new bedding before use with a gentle, baby-suitable detergent. Strong fragrances and heavily scented fabric conditioners can be irritating for some babies, so less is often more.
Natural fibres are appealing, but easy care still counts. A sheet that feels lovely but needs special treatment may not suit a household dealing with regular laundry. For everyday use, prioritise a smooth finish, dependable stitching and clear washing instructions over decorative details.
Why breathable layers are useful
Babies cannot regulate their temperature as easily as adults. Instead of relying on one thick layer, breathable bedding allows you to adjust their sleepwear or layers as the room changes. Cellular blankets are a familiar choice because their open weave provides warmth without the heavy feel of a dense blanket.
Check your baby regularly rather than judging their temperature by their hands or feet, which are often cooler. Their chest or the back of their neck is a better guide. If they are hot or sweaty, remove a layer; if they feel cool, add an appropriate one. The room temperature, season, sleepwear and your baby’s individual needs all affect what is comfortable.
Think beyond the cot sheet
The cot is the priority, but a few supporting items can make everyday care easier. A spare waterproof protector means you are covered after a night-time leak. Lightweight muslin cloths are useful for feeding and winding, though they should not be left loose in a sleeping cot. A washable blanket can be lovely for supervised cuddles, pram outings or tummy time, rather than overnight cot use.
It is also worth separating sleep bedding from decorative nursery accessories. A throw draped over a nursing chair can bring warmth and colour to the room. Cushions can make a comfortable adult seating area. Keep both away from the cot while your baby is sleeping.
When buying a cot bed intended to last into toddlerhood, plan for the change in bedding needs. The same fitted sheet size may serve you for years, but pillows and duvets should only be introduced when your child is old enough and ready for them. Buying a few excellent fitted sheets now is often better value than stocking up on bedding your baby cannot safely use yet.
Avoid common buying mistakes
The most common mistake is treating a cot like a miniature adult bed. Babies do not need matching pillows, thick quilts or piles of soft accessories. Those purchases can wait, and choosing only age-appropriate bedding keeps the nursery both safer and less cluttered.
Another easy error is ordering by cot name rather than mattress measurement. Even mattresses described as cot or cot bed sizes can vary slightly in depth and dimensions. Measure length, width and depth, then check the product details before choosing fitted sheets or protectors.
Finally, do not assume a high tog is always better. A warmer sleeping bag or heavier layer may suit a cooler room, but can be uncomfortable in centrally heated homes or during warmer weather. Choose warmth for the conditions, not for the season printed on the packaging.
Build a bedding rotation that works
For most families, three fitted sheets and two mattress protectors create a sensible starting rotation. You will have one on the cot, one in the wash and one ready to use. If you have a younger baby with frequent leaks or reflux, an extra protector can make the middle-of-the-night change much easier.
Wash bedding regularly and promptly after any soiling. Follow the care label, and make sure every item is fully dry before it goes back on the bed. Protectors and sheets that retain their shape after washing are worth choosing, as a secure fit matters every time you remake the cot.
At Pillow Factory, we believe everyday comfort starts with dependable essentials. Soft, well-fitting bedding and practical mattress protection may not be the showiest nursery purchases, but they support calmer routines from the very first night.
The best baby bedding is not about creating the most elaborate cot. It is about giving your little one a clear, comfortable place to rest, while making life a little easier for the people caring for them.