The Cot Mattress Company Ltd.

NightyNite® UK's Leading Brand

We have over 30 years experience in the manufacturing and production of baby mattresses.

Checkout our Easychange video and see why "It's the quality that makes us different"

Highest specifications ensure our cot mattresses are more comfortable, supportive, durable, safer and breathable.

Included are luxury machine washable toppers that zip on to our separate waterproof wipe clean base covers, helps keeps your mattress clean and fresh

Choose the best cot mattress for your baby?

Our cot mattresses are made using the finest quality components, they are comfortable, supportive and durable and guaranteed for Five or Seven years depending on the design you choose.

Pocket Springs together with high density blue top foam will ensure your mattress will not dip nor dent. Our award winning Nightynite® branded products have a separate base cover to provide waterproof protection against body fluids.

Toppers that zip on to the cot mattress base covers are breathable and washable. A spare topper (one for the wash is included). No other baby mattress in the UK compares to the Excellence Easychange®

The Base

This can can be either:- Foam, Fibre, Springs, Pocket Springs, coir Lambswool or Latex or a combination of one or two or three of these components

The Foam

Over 90% of all baby mattresses have a foam content. Foam is the key component and comes in a vast selection of qualities.To understand what you are buying it's worthwhile knowing how foam is classified. It's not that complicated.... honestly!

Foam quality is described in two numbers - the most common quality used in over 90% of all cot mattresses is 24/130 foam.

The first number "24" is the weight of the foam per kilo and indicates the density or the foam and this affects the durability.

The second number "130" is the amount of pressure in Newtons it takes to compress the foam to 40% of its size. This measurement is called Indentation Load Deflection (ILD) and this assesses the firmness or the feel of foam. It indicates how it yields to weight and pressure and how long your mattress will last.

24/130 foam classed as CMHR 28,is a basic quality most companies use to pass the British Standard. Obviously as these numbers increase you will get a higher quality foam, This foam will last longer give more comfort and support.

Nightynite® branded products use.a much higher quality foam than the standard24/130. We use 30 /150 and 50 / 215.This very high quality makes a massive difference to the comfort, support and durability.

N.B. if a company does not quote the specification of foam used in a cot mattress, odds- on will be the lowest used to pass the British Standards and it certainly will not last five years probably start to dip after a years wear depending on the activity, heat / dampness and weight of the occupant;

Pocket Springs

By taking out 60% of the foam and replacing it with a sprung core you will reduce the heat in your mattress significantly. Foam is an insulator and air will flow through the springs. Pocket springs will last longer than basic springs and be more comfortable for your baby as your baby gets heavier and more active. There are cheap pocket springs available linked only on the length and not by the length and width and they poor support.

The springs in a sprung or pocket sprung cot mattress are 6 cm deep, to achieve the British Standards of a 10 cm deep mattress you add 2 cm of foam either side. N.B this is a thin layer of foam!

As your baby gets heavier their extra weight will push down on the 2 cm layer of foam and bring the pocket springs into operation. This is where a higher quality foam is vital. At the cot mattress company we use 30/150 foam and 50/215 foam to cover our pocket springs.

As you are now becoming a baby mattress expert you can now see how using much higher quality foam will make a huge difference to the comfort, support and durability of a cot- bed mattress


Points for - Fibre is inexpensive compared to foam. They can be made from recycled plastic bottles (great for the environment) Fibre does not have the same initial chemical smell like foam and consequently does not need airing for a day or two before use. Fibre is also cooler than foam.

Points against - Most fibre it is not as supportive as even the average grade of foam, It is certainly not as durable, it may be fine for cot mattress for temporary use at the grandparents house or for filling pillows. We have examined all fibre baby mattresses sold to date and they are really poor.

Latest Fibre News

However there is a new firmer more durable fibre we are currently testing, So far we are very impressed, should be on sale by April 2019. It will be more durable and supportive and we will make it as comfortable as foam buy putting in pocket springs and a lambswool layer each side.

So those customers that wish to consider recycling and the future of the planet have an opportunity to buy a very good quality cot mattress made in part from recycled plastic bottles.


The cores are are mostly made from coir and lambswool, sometimes coir lambswool and springs. Their attraction is they are petro-chemical free and  firmer than 28 weight foam and more durable. A problem occurs if you wish you keep to the all natural format when it comes to the covers. No natural fabric is totally waterproof so a cotton cover will not protect your cot mattress core. However there are other options available on our web site.


Breathable, easily removed for machine washing and give waterproof protection to the core that is a basic requirement. Extra quality covers give more comfort, temperature control, and a big plus is if they are of the Easychange® design:- A protective base cover with zip on Easychange® toppers (you always get two toppers one for the wash)