The specification
8 layers.
Each one stated.
You have decided what you want. 35 centimetres, a seven-zone pocket spring core, a comfort layer that lifts out. Here is exactly what is in it, so you can check it against what you had in mind.
Top to bottom
What 35 centimetres
is made of
Reserve yours
Choose your size.
Every size is the same build. 35 centimetres, seven-zone core, removable comfort layer. You do not choose a firmness.
It arrives medium firm with a flippable comfort layer.
Optional. It reaches the person who makes your mattress.
Onni London+ Sevencore
2,000 springs.
Not one of them touches another.
Sevencore is what a mattress should have been doing all along. 2,000 springs, wound, heat-set and sleeved one by one, so each answers only to the weight directly above it. Your shoulder does not decide what your hip gets. Nobody turning over at 3 in the morning decides anything for you.
7 bands run the length of it, set to the shape of a person rather than the shape of a rectangle. 2 millimetre wire holds the hips and shoulders, where a body lands hardest. 1.8 through the waist and legs, where it does not. You are not the same weight all the way down, so the bed is not the same tension all the way down.
20 centimetres of it. Guaranteed a quarter of a century, because it is the part that never comes out and never wears.
Pocket springs being wound and encased
The comfort layer
One layer.
2 different nights.
10 centimetres, two densities bonded face to face. Sleep on one side and the bed gives a little more. Turn it over and it holds you a little higher. Same mattress, a different night, and it costs nothing to change your mind.
If neither face is yours, tell us how it should feel. We cut and assemble a new one to your description and send it, for a year, with our compliments. Most people ask once. Some never do.
The cover
The most effective cooling
material on the market.
Coolweave is the most effective cooling material on the market. Knitted at 400gsm, 4 times the weight of what most mattresses arrive in, and open enough that heat walks straight out of it instead of gathering under you. Heavy in the hand, weightless to sleep on.
It works with Coolcell, 1 centimetre of gel directly beneath it. Coolcell takes the heat off your skin. Coolweave lets it go. Neither does much alone, which is why everyone else's gel sits buried in foam doing nothing.
It is cut, sewn and fitted by hand, then closed with a zip that runs every side of the mattress. Nothing is glued. Nothing is tufted through. The cover is what holds the bed together, which is the reason the bed can be opened again.
Then it is checked, layer by layer, before it is rolled. Once it is rolled nobody can see inside it, so it is looked at properly while somebody still can.
Roll-packed after inspection
A year to tell us how it should feel. We remake the comfort layer to that, with our compliments, as often as it takes.
Collected from your home and refunded in full. Emperor is made to order and excluded.
The part that carries you is guaranteed for a quarter of a century.