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Cot Sheets

Key Summary

  • Cot sheets keep your baby's mattress clean and provide a soft, safe sleep surface

  • Fitted sheets with elastic edges stay secure and reduce suffocation risks

  • Choose breathable materials like cotton or bamboo for comfort and temperature regulation

  • You'll need at least 2-3 sheets for easy rotation during washing

  • The right size matters, sheets should fit snugly without bunching or coming loose.

Types of Cot Sheets

Cot sheets come in different styles to suit your needs and nursery setup and are part of our wider bedding range.

  • Fitted cot sheets

  • Jersey cot sheets

  • Waterproof fitted sheets

  • Organic cotton sheets

  • Bamboo cot sheets

  • Flat sheets

Key Features to Look For

Fitted Corners

Fitted sheets with elastic all around are a ‘must have’. They should fit snugly over the mattress without any loose fabric bunching up. You shouldn't be able to pull up more than a few centimeters of fabric from the mattress. Expert tip: if you can pull up more than a few centimeters, it's too loose and not safe.

Safety

Safety is everything when it comes to sleep. Choose sheets that fit your mattress size exactly. Too big and they bunch up creating suffocation hazards, too small and they pop off. Avoid any sheets with loose decorations, ribbons, or detachable parts. Always follow safe sleep guidelines with just a fitted sheet on a firm mattress, especially during the newborn stage. Learn more about safe sleeping and your newborn

Material

Breathable, natural fabrics are best. Cotton is soft, durable, and machine washable. Bamboo regulates temperature brilliantly and can be naturally hypoallergenic. Organic options avoid harsh chemicals against delicate skin. Jersey knit is stretchy and forgiving. Avoid synthetic materials that don't breathe well or could overheat your baby.

Sizes

Standard cot mattresses are usually around 130cm x 69cm, but always measure your mattress before buying. Bassinet, cradle, and toddler bed sheets are all different sizes. Check the packaging and ensure the sheet matches your mattress dimensions exactly for a safe, snug fit.

The Final Word

Cot sheets might seem simple, but choosing the right ones makes a real difference to your baby's comfort and safety. Go for fitted sheets that match your mattress size perfectly, choose breathable natural materials, and keep a few spares on hand for those inevitable midnight changes. Sweet dreams ahead!

Frequently Asked Questions

Change them weekly as a minimum, or immediately after any leaks, spills, or vomits. If you’re unsure how many sets to keep on hand, this guide on baby linen and how much you really need is helpful. If your baby is unwell or prone to night sweats, we recommend changing them more frequently.

Switch to hypoallergenic options like organic cotton or bamboo. Wash new sheets before use to remove any manufacturing residues. If irritation continues, consult your GP.

Look for multi-packs which offer better value. Check for our sales on trusted brands. Quality doesn't always mean expensive. Expert tip: focus on good materials and proper fit over fancy patterns.

Yes, organic cotton is grown without harsh chemicals and pesticides, making it gentler on delicate baby skin. They're a great choice for babies with eczema or sensitivity

This is a hard NO! Bassinet sheets are much smaller and won't fit a cot mattress properly. Using the wrong size creates dangerous loose fabric.

Weekly is the general rule, but wash immediately after accidents. Use gentle, baby-friendly detergent and avoid fabric softener which can reduce breathability and irritate skin.