Choosing the right toddler mattress is incredibly important. This is a crucial stage in their body's development, so you'll want to ensure they get all the support they need. Find out more about this unique size with our frequently asked questions!

A toddler mattress measures 2'3" x 4'6" or 70 x 140cm, which offers enough space for a young child to sleep comfortably as they grow in their toddler bed. It is smaller than a single mattress, which makes it the ideal size as a transition between a cot and a big kids' bed!

A cot mattress is around 1'9" x 4'0" or 53 x 120cm, making a toddler mattress slightly larger. This means that while you could put a cot mattress onto a toddler bed, it will not correctly fit it and will likely slide around, while a toddler bed mattress will be too big for a cot. We recommend choosing the correct size to match your child's bed to ensure they get all the support they need.

Our mattress size guide has more helpful information about the various sizes available on Happy Beds.

We recommend that 140 x 70cm mattresses be used by children between the ages of 2 and 4. If they're younger than this, they should ideally still be in a cot bed, and others should be moved up to a bigger bed, such as a small single bed.

Deciding when your child needs to move to a kids' bed can be tough, so we have a helpful guide on determining if your child is ready for a toddler bed!

Ideally, you'll want to purchase a 70 x 140cm mattress on the firmer end of the scale, with medium firmness being the softest you should go. This is because your child needs lots of support for their growing body, and softer surfaces such as foam can cause incorrect spinal alignment and pressure on their joints.

Another downside to foam mattresses is that they can be harder for a toddler to roll over. A firm toddler mattress is preferred to support a growing toddler's body. Due to the heat-sensitive nature of foam, they might also struggle to regulate their temperature, so we'd recommend opting for a foam-free toddler mattress where possible!

Choosing Happy Beds for your 140 x 70 mattress means that your child not only gets plenty of comfort and support, but you also get to enjoy some of our fantastic benefits, such as:

• Manufacturer's guarantee – your 70 x 140 mattress will come with a 5-year manufacturer's guarantee as standard, which is activated from the day of delivery!
• Rated Excellent – we have over 15,000 reviews from previous customers on our Trustpilot, so you can buy with confidence knowing others have too.
• Customer service - our knowledgeable customer service team is ready to answer any questions about your order, delivery, or product.
• Flexible payments - we make paying for your order easier than ever with multiple payment options, from upfront payment to spreading the cosy with 0% interest finance from Klarna or PayPal.
• Fast delivery – give your child a supportive sleep sooner than ever, with toddler bed mattresses in stock and ready for delivery whenever you need them with our standard and premium delivery service.