Choosing the right cot or crib for your baby can feel overwhelming. With so many styles, sizes, and features available, it’s important to find a solution that offers the right balance of comfort, safety, and suitability for your child. This guide breaks down the different cot mattress sizes and how to select the best option for your family.
Understanding cot mattress sizes
In New Zealand, cot mattresses generally follow two main size categories: standard and compact. However, the most important factor is ensuring the mattress fits your cot correctly. If your cot doesn’t include a mattress, always refer to the safety guidelines provided on the label or in the assembly instructions.
According to New Zealand safety standards, a cot mattress should:
- Leave no more than a 2 cm gap between the mattress and cot sides when centred
- Leave no more than a 4 cm gap when pushed to one side
- Be firm and flat, with no soft or cushioned surfaces
If you’re unsure about your cot or mattress, consult trusted sources such as Plunket, Ministry of Health, or Safe Sleep guidelines.
Common cot mattress sizes
STANDARD COT MATTRESS
Typically measures 130 cm x 69 cm, suitable for most rectangular cots and ideal for children up to 2–3 years old.
COMPACT COT MATTRESS
Measures around 108 cm x 53 cm, perfect for smaller spaces, and suitable for children up to 2 years.
Other sleeping options
BASSINETS & BEDSIDE SLEEPERS
Designed for newborns up to 6 months, these are smaller and often placed beside your bed. Mattress sizes vary but are usually 70–80 cm long and 30–40 cm wide.
OVAL OR ROUND COTS
These uniquely shaped cots often come with custom-fit mattresses. Sizes vary by brand and model.
PORTACOTS & TRAVEL COTS
Portable and foldable, these are ideal for travel. They usually include a mattress and may feature extras like change tables or mobiles. Mattress sizes are typically between a bassinet and compact cot.
Choosing the right mattress
FIRMNESS & SAFETY
Unlike adult mattresses, baby mattresses must be firm to reduce the risk of suffocation or Sudden Infant Death Syndrome (SIDS). Avoid soft, plush, or pillow-top surfaces.
SPRING VS FOAM
- Spring Mattresses: Offer long-lasting support and durability. Great for extended use or multiple children.
- Foam Mattresses: Lightweight and versatile, often reversible and easier to move or clean.
COVERS & MATERIALS
Look for breathable, hypoallergenic fabrics like cotton, bamboo, or polyester blends. A removable, washable cover is ideal. If not included, consider a waterproof mattress protector to guard against spills and stains.
PLANNING FOR THE FUTURE
Think about whether the mattress will be reused for future children or converted into a toddler bed. Standard-size mattresses often offer more flexibility for long-term use.
FAQs
In New Zealand, the size of a bassinet mattress varies depending on the brand and shape. They are usually around 40 x 80 cm, but it is best to check with the manufacturer or retailer for accurate measurements.
In New Zealand, the standard cot mattress size is 69 x 130 cm, or approximately 27 x 51 inches. The smaller compact size is 53 x 108 cm, or approximately 21 x 43 inches.
In New Zealand, the standard baby mattress size is 69 x 130 cm, or approximately 27 x 51 inches. The smaller compact size is 53 x 108 cm, or approximately 21 x 43 inches.
