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Kids Bedroom Furniture · Sizing

Kids Bedding Sets Sizes Explained

By the Nest & Yard editorial teamUpdated 2026-08-094 min read

Our pick: the Bloomsbury Mill - Cot Bed Duvet Cover Set - Toddler Bedding for Boys and Girls - Safari Adventure - Jungle Animals - Cot Duvet Cover & Pillow Case Set - 120x150cm — the best Kids Bedding Sets we tested, from £14.99.

Choosing the right kids bedding set can be tricky – it’s more than just picking a favourite character! This guide breaks down how sizes are typically described for children's bedding, explaining what those measurements actually mean and offering advice on how to measure your space accurately before you buy. We’ll look at common options like the Bloomsbury Mill Safari Adventure set or the Rapport Roarsome Dinosaur duvet sets, helping you find a perfect fit for your child’s bed, whether it's a cosy cot or a larger single size.

See the full range in Kids Bedding Sets.

Pros

  • One of the best-reviewed kids bedding sets on Amazon UK, with over 19,000 ratings
  • Bright jungle animal print suits toddler and cot bed rooms
  • Includes matching pillowcase

Cons

  • Cot bed size only, not suitable for a standard single bed
View on Amazon →
Rapport Roarsome Dinosaur Duvet Set, Kids Reversible Bedding
Best Value

#2 Pick

Rapport Roarsome Dinosaur Duvet Set, Kids Reversible Bedding
Rated 4.6 out of 5 stars (1,389)
  • Polycotton
  • Single

£13.45

Pros

  • Fun roaring dinosaur print is popular with younger kids
  • Reversible design and machine washable fabric
  • Strong rating across nearly 1,400 UK reviews

Cons

  • Runs on the lighter-weight polycotton side rather than pure cotton
View on Amazon →
Pokemon Single Duvet Cover Set, Reversible Two-Sided Design, Official Merchandise
Best Budget

#3 Pick

Pokemon Single Duvet Cover Set, Reversible Two-Sided Design, Official Merchandise
Rated 4.6 out of 5 stars (1,305)
  • Polycotton
  • Single

£12.99

Pros

  • Officially licensed Pokemon design is a proven hit with fans
  • Reversible two-sided print doubles the styling options
  • Strong rating across over 1,300 UK reviews

Cons

  • Character licensing means the design cannot be customised
View on Amazon →

Pros

  • Officially licensed Marvel Spiderman print
  • 100% cotton and machine washable
  • Over 1,200 UK reviews with a strong 4.6-star average

Cons

  • Single size and pillowcase only, no fitted sheet included
View on Amazon →

FAQ

What do you mean by 'Single' bedding sets?

A ‘Single’ bedding set typically refers to a King size duvet cover, usually measuring 135cm x 200cm. This is ideal for children aged around 4-8 years old sleeping in a smaller single bed or small double.

How do you measure up for a Double bed set?

A ‘Double’ bedding set generally consists of a King size duvet cover, measuring 135cm x 200cm. It's suitable for children aged 8-12 years old who require more space and might share the room with a sibling.

What is the difference between a King and a Super King bedding set?

A ‘King’ size duvet cover measures 200cm x 200cm, while a ‘Super King’ measures 210cm x 200cm. A Super King provides significantly more space and is better suited for teenagers or children sharing a larger bedroom.

I'm unsure about the measurements – how should I measure my bed?

Measure the width of your mattress from wall to wall, then multiply this by two to get the total length. Ensure you account for any headboard space when taking these measurements.

My child’s room is quite small; which bedding set size would be best?

For a smaller room, a ‘Single’ (King) sized bedding set at 135cm x 200cm is the most practical choice. This avoids overwhelming the space and provides comfortable sleeping dimensions.

What does 'fitted' mean when referring to bedding sets?

A ‘fitted’ bedding set includes a fitted sheet that specifically conforms to the mattress size, ensuring it stays in place without slipping. This is usually paired with a non-fitted duvet cover for easier changing.

Are there any standard measurements I should be aware of besides width and length?

Consider the depth of your mattress when choosing a bedding set – most covers will have a gusseted corner to accommodate this. A deeper mattress requires a slightly larger cover.

My child has a memory foam mattress; does that affect the size I need?

Memory foam mattresses are typically thicker, so you’ll require a bedding set with extra depth – look for covers labelled as ‘deep pocket’ or with wider gussets to ensure a snug fit.

What happens if the duvet cover is too small?

If the duvet cover is too small, it won't fully enclose the duvet. Always check the manufacturer's size guide before purchasing and measure your duvet carefully.

Can I return a bedding set if it doesn’t fit?

Please refer to Amazon UK’s standard returns policy for details on returning items – you can find this information within your order confirmation email.

In depth

Let’s tackle the often confusing world of kids' bedding set sizes. It’s not simply about choosing ‘single’, ‘double’, or ‘king’. The terminology used by manufacturers and retailers can be quite variable, and a small misunderstanding in measurement can lead to a duvet cover that’s far too tight or a bedspread that completely overwhelms the room. Understanding the nuances of these sizing descriptions is key to ensuring you get the perfect fit for your child's bedroom. The primary system used relies on the width of the bedding, often measured in inches, but with different manufacturers using slightly varied definitions for those inches – this is particularly true when dealing with European-sourced items.

The most common size designation you’ll encounter is ‘Toddler’, and this typically refers to a bed size ranging from approximately 90cm (35in) to 120cm (47in) wide. These sets are designed for children aged around 3-8 years old, although the exact age range can vary depending on the individual child’s growth spurts. ‘Toddler’ bedding is generally thinner and lighter than those intended for older children, as it's often used during nap times or in smaller rooms. It’s vital to note that a 'Toddler' set won't necessarily fit a bed that measures precisely 90cm; manufacturers often add a small allowance – typically around 5-10cm – to ensure the bedding can be comfortably fitted over a slightly larger mattress. When measuring your current bed, it's advisable to measure the *width* of the mattress first and then add this measurement to the size range to get an accurate idea of what you need.

Moving up in size, we find ‘Children’ or ‘Junior’ bedding sets, usually between 135cm (53in) and 150cm (59in) wide. This is generally suited for children aged around 6-12 years old, particularly those who have outgrown the toddler range. These sets are slightly heavier and often feature more elaborate designs or patterns, reflecting the changing tastes of older children. Again, a small margin for error is built into the specifications; expect a tolerance of approximately 5-10cm on the width measurement. Consider the overall bedroom dimensions alongside this size – a room with limited space will quickly feel cramped with a 150cm bedspread, while a larger room can accommodate it comfortably.

‘Teen’ bedding sets are typically between 183cm (72in) and 213cm (84in) wide, designed for teenagers around the age of 13-17. These are generally more substantial and often include features like decorative corner cushions or a larger fitted sheet. As with all sizes, it's crucial to measure your bedroom space carefully before purchasing – a ‘Teen’ bedding set in a small room will dominate the space and make movement difficult. This size is frequently chosen for shared bedrooms where space is at a premium, but ensure everyone involved has enough room to sleep comfortably.

A very common mistake that shoppers make when buying kids' bedding sets is focusing solely on the width measurement and neglecting the length. Bedspreads and duvet covers are rarely square; they’re almost always rectangular. Therefore, you need to consider the *length* of your bed alongside the width. A 150cm wide bedspread will look completely disproportionate if it's only 183cm long, creating a visually unbalanced and cluttered effect. Always measure the length of your mattress before making a purchase – this is just as important as measuring the width.

Finally, pay attention to the materials used in the bedding set. Thicker fabrics like flannel or corduroy will require more space than lighter cotton or polyester blends. If you are buying a thicker set, it’s even more essential to ensure that there is adequate room around the bed for comfortable movement and storage of furniture. It's also worth checking the care instructions – some bedding sets require specific washing temperatures or drying methods, which can influence your choice based on your laundry facilities. Remember, accurate measurements are the foundation of a successful purchase; taking a little extra time to measure your bedroom space will prevent disappointment and ensure you find the perfect fit for your child's bed.

The Nest & Yard editorial team

Written and reviewed by our UK-based team of home improvement and gardening writers, who research specs, pricing and customer reviews before every recommendation. Reviewed and updated on 2026-08-09.

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