Mattress for overweight people: which one supports more than 100 kg

By the Morfeo team · factory in Yecla (Murcia) · updated on October 11, 2026

How much weight can a mattress support? The 95 kg rule

Many mattress listings do not say up to how many kilos they are designed for. We put it in writing because that is what really determines which model to buy:

• Up to 95 kg per person: any mattress in the Morfeo range. All are guaranteed up to that weight.
• More than 95 kg per person: the Morfeo XL Mattress, designed for people over 100 kg.

Pay attention to two details. The first: the figure is per person, not the sum of the two sleeping in the bed. What deforms a mattress is the weight concentrated in one area (especially the hips), not the total distributed. The second: between 95 and 100 kg there is no gray area. If you are over 95 kg, we send you to the XL, because it is the only one calculated to go above that limit.

What happens to a normal mattress when you weigh more?

A mattress designed for an average weight does not break overnight. It gradually gives out, and usually does so in these three areas:

1. The core gives way where there is the most load. The hips and shoulders concentrate the weight. If the core is not sized for it, the impression stops recovering in the morning and the famous “hammock effect” appears.
2. The edge sags. It is where you sit every day to put on your shoes or get up. With more weight, it is the first area to sink and the bed becomes narrower than it looks.
3. The base flexes and the mattress follows it. An old or thin-slatted bed frame curves under the load, and the mattress, no matter how good it is, adopts that curve.

None of the three things is bad luck or misuse. It is just that the mattress was not designed for that weight. That is why the choice starts with the weight limit and not with firmness.

What does a mattress for overweight people need?

1. A reinforced pocket-sprung core

What supports your weight is the core, not the top layer. Pocket springs work separately, recover their shape and allow air to circulate inside. With a high weight, that recovery is what extends the life of the mattress. If you want to properly understand the difference between cores, you can find it in our guide on viscoelastic versus springs.

2. High firmness, which is not the same as hard

You need a support that does not give way, but with a comfort layer that allows the shoulder and hip to sink in. If the surface is rigid like a board, those two points do not sink just enough and the spine does not stay straight either. We explain it in more detail in what is better, a hard or soft mattress.

3. That the edge holds up

Sit on the side (in the store or at home during the trial) and see how much it sinks. If when you sit down you notice that you slide out, that edge will sag before the rest.

4. That it breathes

With more contact surface, heat accumulates more. Pocket springs allow air to pass through the inside of the mattress, something a solid block of foam does not do. If you also tend to get hot at night, a breathable protector helps not to make it worse.

5. A weight limit in writing

It is the only proof that the manufacturer has done the math. If it does not appear on the product sheet or in the warranty, ask before paying.

The Morfeo XL Mattress: what it is and what it is not

It is the only mattress in our range designed to go above 95 kg per person. It is not a more expensive version of the rest: it has a different structure. This is what it has, just as described in its product sheet:

• Reinforced structure of independent pocket springs and high-density foam, which distributes the weight evenly and is made not to sink or deform with use.
• High firmness, with pressure relief on shoulders, hips and back.
• Airscape air circulation system and breathable fabric.
• Bed independence: if two people sleep in the bed, the other person's movements are barely noticeable.

And two things it is worth knowing before ordering, so you are not surprised:

• It arrives rolled. We roll it up right after manufacturing it so that transport is more agile. When you take it out of the packaging, it recovers its shape.
• It does not have a removable cover. That is why we recommend putting a protector on it from the first night: the Tencel protector (waterproof and breathable) or, if you get hot, the FreshCool® protector with PCM thermoregulating fabric. Both can be machine washed at 30 °C maximum.

It is manufactured in all the usual sizes in Spain, from 90x190 to 200x200, and you have it along with the rest of the options in the collection of mattresses for people over 100 kg.

What base supports more than 100 kg?

It is half of the purchase and the one most people skip. A reinforced mattress on top of a flexing bed frame ends up copying the curve of the bed frame. Before debuting the mattress, look what is underneath: broken or curved slats or a center that gives way are signs that it is time to change it.

At Morfeo, these are the ones that support more than 100 kg per person:

The upholstered storage beds Saona and Duna also fit into this group. If you are unsure between a base and a storage bed, the question is whether you need to store things underneath; you have it solved in bed frame or storage bed: which one to choose.

If two people sleep in the bed and one weighs more: which mattress do we put?

Since the warranty is calculated per person, the calculation is simple:

• Both weigh 95 kg or less: any mattress in the range. For couples we usually recommend the Original Hybrid, due to the bed independence of its more than 2,000 pocket micro-springs.
• Both weigh over 95 kg: the XL in the size of your bed, without doubts.
• Only one weighs over 95 kg: also the XL. In a double bed there is a single mattress, and it has to be prepared for the weight of the one who weighs more. The one who weighs less does not lose out: the XL is also high firmness and, with the pocket springs, each side works on its own, so they do not notice that the other side sinks more.

There is an alternative if you have a 180 cm bed: two 90x200 mattresses on the same base, an XL on the side of the one who weighs over 95 kg and another model from the range on the side of the one who does not. Each one sleeps on the mattress calculated for their weight. In exchange, you will notice the joint between the two mattresses in the center of the bed, which is exactly what a single mattress avoids. If you ask us, we adapt each of the two mattresses to the person who is going to sleep on it and their weight.

What does not work is choosing an “intermediate” mattress thinking about the average of the two weights: the side of the one who weighs more would be above their limit. If you want to see everything that needs to be considered when sleeping as a couple (measurements, heat, firmness), we explain it in the guide of the best mattress for couples.

Table: which mattress according to your weight

Our recommendation by profile

If you are going to renew the entire bed, also look at the bedroom packs and the complete collection of storage beds.

How to make it last longer

• Protector from the first day. The XL does not have a removable cover, so the protector is what keeps it clean and dry.
• Rotate it from head to foot every now and then, for example with every change of season, so that the weight does not always fall on the same point.
• Check the base. If one day you notice that the center gives way, the problem is usually under the mattress.

Frequently asked questions