Choosing a memory foam mattress is easier when you compare the complete construction rather than focusing on one material or one sales claim. The comfort layer affects how the sleeping surface responds, but the support base, total depth, firmness, cover, bed base and mattress size all influence how the finished mattress feels and performs.
A useful buying decision begins with your current bed and your own comfort preference. Decide whether you want a balanced medium feel, a firmer and more stable surface, or a deeper high firm construction. Then compare the layers inside each mattress and check that the finished dimensions suit your bed frame.
This guide explains the details that matter before ordering and shows how the three All Foam mattresses differ.
If total mattress depth is one of your main buying questions, the foam mattress thickness guide compares the current 8, 9 and 10 inch All Foam constructions.
Understand what memory foam does
Memory foam is a viscoelastic polyurethane foam that responds to pressure and warmth. It adapts more gradually than many standard foams, which creates the close contouring feel commonly associated with memory foam mattresses.
The material is normally used as a comfort layer rather than as the entire mattress. The layer near the sleeping surface changes how the mattress feels when you first lie down. The deeper support foam gives the mattress its main structure and helps prevent the comfort layer from compressing without enough support underneath.
A thicker memory foam layer can create a more noticeable contouring feel, but thickness does not tell you everything. The grade and depth of the support base also matter. Two mattresses can contain the same amount of memory foam and still feel different because the material underneath is different.
This is why it is better to compare the whole layer build than to choose a mattress simply because the description mentions memory foam.
Compare the complete layer construction
Every mattress in the All Foam range contains three main elements. These are an Air Tech ventilation pad, a memory foam comfort layer and a deeper foam support base. The amount of memory foam and the type of support foam change between models.
The Air Tech ventilation pad is part of the upper construction. The memory foam layer provides the slower responding comfort surface. The base layer supports the comfort foam and gives the mattress its firmness and stability.
When comparing mattresses, read the construction from top to bottom. Check the comfort layer first, then look at the support grade and its depth. A product with more memory foam is not automatically the better choice for every sleeper. Someone who prefers a firmer and steadier surface may place more importance on the support base than on having the deepest possible comfort layer.
The Foam Mattress vs Spring Mattress guide explains how a layered foam construction differs from a mattress that relies on a spring unit.
Choose the firmness you actually prefer
Firmness describes the general surface feel of a mattress, but it is not an exact measurement that feels identical to every person. Body weight, sleeping position, the bed base and personal preference can all change how the same mattress feels.
A medium mattress usually allows more surface cushioning than a firm mattress. A firm mattress normally feels more stable and allows less noticeable sink. A high firm construction feels more substantial again, although the upper memory foam layer still provides contouring comfort.
Do not choose a mattress only because a particular firmness is popular. Think about the mattress you use now. Decide whether you want the new mattress to feel softer, similar or firmer. This gives you a practical reference point when comparing the three options.
The Soft, Medium or Firm Mattress guide explains why firmness labels should be considered alongside body weight, sleeping position and the full construction.
Deep Sleeper Comfort for a balanced medium feel
The Deep Sleeper Comfort is the medium option and the most economical mattress in the current All Foam range.
Its construction includes an Air Tech ventilation pad, 2 inches of memory foam and 6 inches of medium density support foam. The finished mattress has a total depth of 20cm.
This model is intended for customers who want a balanced combination of surface comfort and support without choosing the firmer options. The medium support base allows a more accommodating feel than the high density base used in Deep Sleeper Back Care.
Choose this mattress when you prefer a medium feel, want the lowest total depth in the range and do not need the deeper memory foam layer used in the other two models.
Deep Sleeper Back Care for firmer support
The Deep Sleeper Back Care is designed for customers who prefer a high level of firmness and a more stable sleeping surface.
Its construction includes an Air Tech ventilation pad, 3 inches of memory foam and 6 inches of high density support foam. The finished mattress has a total depth of 22.5cm.
Compared with Deep Sleeper Comfort, this model adds another inch of memory foam and replaces the medium density base with high density support foam. The result is a firmer construction with a deeper contouring layer at the surface.
The product name should not be treated as a medical claim. The practical reason to choose it is the high firmness and stable high density base. Select it because you prefer that feel, not because you expect a mattress to diagnose or treat a health condition.
Luxury Deep Sleeper for the deepest construction
The Luxury Deep Sleeper is the deepest and most substantial mattress in the range.
Its construction includes an Air Tech ventilation pad, 3 inches of memory foam and 7 inches of Luxury Reflex support foam. The total depth is 25cm including the cover.
The upper memory foam depth is the same as Deep Sleeper Back Care, but the base is one inch deeper and uses Luxury Reflex foam. Reflex foam has a faster recovery feel than memory foam, so it provides a responsive support layer underneath the slower responding comfort material.
Choose this model when you want the deepest All Foam mattress, a high firm feel and the most substantial layered construction in the standard range.
Check memory foam depth and support depth together
Memory foam depth affects how much of the slow contouring material sits above the support base. The support depth affects the amount of structural foam underneath it. Both parts need to be considered together.
Deep Sleeper Comfort uses 2 inches of memory foam above 6 inches of medium density foam. Deep Sleeper Back Care uses 3 inches of memory foam above 6 inches of high density foam. Luxury Deep Sleeper uses 3 inches of memory foam above 7 inches of Luxury Reflex foam.
This comparison shows why total depth alone cannot explain firmness. Luxury Deep Sleeper is deeper than Deep Sleeper Back Care, but the support materials are also different. Deep Sleeper Comfort has the shallowest construction and the least memory foam, yet it is the medium option because of its medium density base.
When reading any mattress description, look for both layer depths and the name of the support material. A vague statement such as deep comfort does not provide enough information on its own.
Measure your bed before choosing a size
All Foam standard mattresses are available in four sizes.
Single measures 90cm by 190cm. Double measures 135cm by 190cm. King Size measures 150cm by 198cm. Super King measures 180cm by 198cm.
Measure the usable space inside the bed frame or the top surface of the divan base rather than relying only on the name of the existing mattress. Older frames, imported beds and specialist furniture do not always match current standard UK dimensions.
Measure the width and length in more than one place. Check the narrowest internal points if the frame has raised sides or corner fittings. Also consider the total mattress depth. A deeper mattress can change how much of the headboard remains visible and how high the sleeping surface sits above the frame.
If your required construction is not covered by the three standard mattresses, the custom foam mattress builder lets you choose a standard UK size, a total depth of 8, 9 or 10 inches, one to three layers and six foam grades. Contact All Foam before ordering when the finished width or length must differ from the standard sizes offered online.
Consider the bed base
A foam mattress needs a level and supportive base. The mattress can follow the shape underneath it, so a damaged, bowed or sagging base can affect how the new mattress feels.
Inspect the base before placing an order. Check that the frame is stable and that the supporting surface is even. Replacing a mattress without correcting a damaged base can leave the new mattress resting on the same uneven support.
A slatted base may be suitable when the slats provide even support and the gaps are appropriate. Check the bed manufacturer guidance when you are unsure. Broken slats, wide unsupported gaps or a frame that flexes excessively should be corrected before the mattress is used. The foam mattress on slats guide gives a practical pre-purchase inspection checklist.
The base is especially important when comparing firmness. A solid and level base can make a mattress feel steadier, while a flexible base may change the way it responds.
Look at the cover and surface details
Each standard All Foam mattress includes a premium navy border with a diamond quilted zip off cover. The range also lists Heat Dispersion Technology in the product details. If sleeping temperature is a concern, the Does Memory Foam Make You Hot? guide explains how mattress construction, bedding, protectors, room temperature and airflow work together.
The cover affects the immediate surface feel and provides a finished outer layer around the foam construction. Check the care instructions before cleaning it. A zip off cover should not automatically be assumed to be machine washable. Follow the instructions supplied with the mattress.
A suitable mattress protector can help keep the sleeping surface clean and reduce direct exposure to spills and everyday marks. The protector should fit the finished mattress depth without pulling tightly across the corners.
Do not soak the foam core or apply strong cleaning products unless the care instructions specifically permit it. The foam product care guide explains how to keep foam dry, ventilated and properly supported.
Decide whether you need a mattress or a topper
A mattress topper changes the surface feel of an existing mattress. It does not replace the support structure underneath.
A topper can be useful when the current mattress remains level and supportive but feels firmer than you prefer. It can add a separate comfort layer without replacing the full mattress.
A topper is not the correct solution when the existing mattress is badly dipped, uneven, damaged or no longer supportive. Adding more foam above a failed support core does not repair the structure below.
Compare the mattress topper range when your current mattress is still in good condition and you only want to adjust its surface feel. Read the Mattress Topper or New Mattress guide when you are uncertain which option is more suitable.
This cross comparison can prevent two common buying mistakes. The first is replacing a sound mattress when a topper would have provided the required comfort adjustment. The second is buying a topper to cover a mattress that should be replaced.
Understand how the mattress should feel at first
A new mattress can feel different from the one it replaces, especially when the previous mattress has softened or changed shape through use. Allow time to become familiar with the new construction, but do not ignore a clear mismatch between your chosen firmness and your comfort preference.
Memory foam responds more slowly than many standard foams. This gradual response is part of the material character. Customers who enjoy a close contouring feel may value this response, while customers who prefer faster recovery may place greater importance on the support foam beneath it.
New foam products can also have a light new product smell at first. Normal airing should reduce this. Keep the room ventilated and follow the care information provided with the mattress.
Check whether the mattress needs turning
Layered memory foam mattresses normally have a specific sleeping surface. The comfort layer is positioned above the support base, so turning the mattress upside down would place the layers in the wrong order.
Do not turn the mattress over unless the supplied care instructions say that you should. Follow any guidance about rotation separately. Turning and rotating are not the same action. Turning means flipping the mattress so the underside becomes the sleeping surface. Rotating means moving the head end to the foot end while keeping the same surface on top.
Always follow the instructions supplied with the exact product rather than applying a general rule from another mattress.
Review the warranty before ordering
Every standard All Foam mattress includes a 6 year warranty, subject to the warranty terms.
A warranty is not a substitute for choosing the correct mattress or using a suitable base. Read the applicable terms so you understand what is covered and what the customer must do. Keep the order information and follow the product care guidance.
Damage caused by an unsuitable base, moisture, incorrect cleaning or use outside the product instructions may be treated differently from a manufacturing issue. The warranty wording should be reviewed before purchase rather than only after a problem occurs.
Compare the standard range in a simple order
A clear comparison can be made in four steps.
First, choose the general feel. Deep Sleeper Comfort is medium. Deep Sleeper Back Care is high firmness. Luxury Deep Sleeper is luxury high firm.
Second, compare the comfort layer. Deep Sleeper Comfort has 2 inches of memory foam. The other two mattresses each have 3 inches.
Third, compare the support base. Deep Sleeper Comfort uses 6 inches of medium density foam. Deep Sleeper Back Care uses 6 inches of high density foam. Luxury Deep Sleeper uses 7 inches of Luxury Reflex foam.
Fourth, compare total depth. The three depths are 20cm, 22.5cm and 25cm including the cover for the Luxury model.
This process keeps the decision focused on meaningful differences rather than product names alone.
Questions to answer before you buy
Before adding a mattress to your basket, confirm the following points.
What firmness do you prefer based on the mattress you use now?
Do you want 2 inches or 3 inches of memory foam?
Which support base best matches your preference for medium, firm or responsive high firm support?
Does the exact width and length fit your bed frame?
Will the total mattress depth suit the frame, headboard and fitted sheets?
Is the bed base level, stable and supportive?
Do you need a complete mattress, or would a topper be enough?
Have you read the cover care and warranty information?
Answering these questions before ordering reduces uncertainty and makes it easier to compare the products on relevant details.
Final buying guidance
Choose Deep Sleeper Comfort when you want a balanced medium mattress with 2 inches of memory foam and a 6 inch medium density support base.
Choose Deep Sleeper Back Care when you prefer a firmer and more stable feel with 3 inches of memory foam and a 6 inch high density support base.
Choose Luxury Deep Sleeper when you want the deepest construction, 3 inches of memory foam and a 7 inch Luxury Reflex support base.
Whichever model you consider, measure the bed, inspect the base and compare the complete layer build. Memory foam is only one part of the mattress. The support foam, firmness, total depth, cover and bed base determine whether the finished construction matches what you need.
Standard budget foam versus memory foam
If price is a major part of the decision, compare the material as well as the cost. The budget foam vs memory foam mattress guide explains how quicker-response standard foam differs from a layered memory foam construction, so you can decide whether the extra comfort material is something you actually want.
