You spend roughly a third of your life asleep, and between shifts and everything else, the quality of those hours is not optional. The problem is the category: the big boxed mattress brands sell a few hundred dollars of build for four figures because you fund their ad budget with every order. The mattress itself is springs, foam and a cover, and once you know what each part does, you can buy the same engineering without paying for anyone's Super Bowl of podcast reads. That is what this guide is for.
Inside the mattress, part one
Springs that match where the weight sits
- Your spine rests level
- Twice tempered steel
- Built for side sleepers and back sleepers
Under the surface sit hundreds of individual pocket springs in seven zones. The zones under your hips and shoulders push back more firmly because that is where your body carries its weight, and the zones under your head, waist and legs push back more gently. The result is simple to feel: your spine rests level all night instead of sagging into a hole, which is what stops that nagging lower back ache by morning.
Inside the mattress, part two
Foam that learns your shape every night
- Less pressure on your hips and shoulders
- You stop feeling him roll over
- Moulds to you, then springs back
The comfort layer is a high density memory foam that behaves a little like honey and a little like rubber. Where your body presses in, it slowly gives and moulds around you, spreading your weight across a much bigger area so your hips and shoulders stop carrying the load on two small points. And because it absorbs movement instead of bouncing it back, when your partner rolls over at 2am, the wave dies in the foam before it ever reaches your side.
Inside the mattress, part three
Your body has to cool down before it can sleep
- About 1 degree cooler to fall asleep
- Heat moves down and out
- Air flows through the open coils
UC Berkeley sleep scientist Matthew Walker puts it plainly: to fall asleep, your core temperature needs to drop by about one degree, and your body sheds that heat through your skin into whatever you are lying on. An old mattress traps that heat against you, which is the 2am doona throw. A well built one lets the heat move through the comfort layers and out through the open coil chamber below, and on our cooler models a gel foam layer helps disperse heat for a cooler sleep feel.
