Mattress Underlay Against Moisture & Mould
Everyone releases moisture during sleep. It collects at the coldest spot – the underside of your mattress at home – causing damp patches, a musty smell and mould. The Matnext Airflow 3D-mesh underlay creates a ventilated air gap so moisture can escape and your mattress stays dry.
Just as effective on the go: in the motorhome & caravan, in the roof tent and on the boat – anywhere mattresses lie on solid surfaces.
- 95 % open mesh fabric
- Suitable for allergy sufferers
- Maintenance-free & durable

moisture build-up
Which height do I need?
Choose your use case – we’ll recommend the right version for you.
Roof tent (hard shell)
10mm
Airflow 10mm
10 mm high, so the hard-shell roof tent still closes safely.
Light & easy to cut.
Motorhome & Camping
15mm/20mm
Airflow BALANCE/PLUS
Maximum comfort for the mobile bed: 20 mm noticeably cushion hard bed boxes and stop trapped moisture. Where space is tight, BALANCE 15 mm works too.
At home
Stable ventilation with a noticeably cushioning effect – against moisture, odour and mould.
Boat
15mm
Airflow BALANCE
Keeps the mattress dry on the closed berth base and prevents mildew stains. Can be cut to fit the typically angled berths exactly.
| Version | Height | Ideal for | Cushioning | Colour | Non-slip |
|---|---|---|---|---|---|
| Airflow 10mm | 10 mm | Roof tent (hard shell), tight spaces | noticeable | White | with Clips |
| Airflow BALANCE 15mm | 15 mm | At home, box spring, motorhome, boat | pleasant | Anthracite | with Clips |
| Airflow PLUS 20mm | 20 mm | Motorhome, large areas, more comfort | comfortable | White | with Clips |
| Airflow ECO 15mm | 15 mm | Natural version from coconut & natural latex | — | Black | naturally |
Matnext Airflow – cut to size in any height
Widths from 70 cm to 200 cm, length up to 240 cm. You simply cut out and trim sections yourself with scissors.
Airflow 10 mm
Price range: 44,90€ through 100,71€
Airflow BALANCE 15 mm
Price range: 57,00€ through 145,00€
Airflow ECO 15 mm
Price range: 52,11€ through 111,49€
Anti-slip clips set of 4
Original price was: 14,90€.9,90€Current price is: 9,90€.
Anti-Mould
Prevents condensation, mildew stains and odours under the mattress – at home and on the go.
Cut to size yourself
To size with household or tailor’s scissors. Curves and corner cut-outs included.
Maintenance-free
Prevents condensation, mildew stains and odours under the mattress – at home and on the go.
For allergy sufferers
95 % open mesh fabric lets warm air circulate. Absorbs no moisture or odours.
Where the Airflow underlay stops moisture
At home & in the box spring bed
On a closed slatted frame or box spring base, moisture builds up especially easily. The Airflow underlay between the base mattress and topper keeps the air moving – against a musty smell in the mattress and mould in the box spring bed. With 20 mm build height you also get a noticeably cushioning effect.
Motorhome & Camping
When the mattress is built directly onto a table top or the bed box, trapped moisture quickly collects there. Instead of standing it up and airing it daily, the cuttable camping underlay actively prevents condensation. With the 20 mm version you also noticeably cushion the often-hard bed box – more comfort in a tight space. If a mattress already smells, read how to dry a damp mattress properly.
Roof tent
In the roof tent, a 3D-mesh underlay is recommended by leading camping experts. Tip: For a hard-shell roof tent the thin 10mm version works best – with 20 mm the tent sometimes no longer closes because of the limited space.
Boat
In the berth, the mattress usually lies on a closed wooden or laminate floor, under which condensation builds up. The Airflow BALANCE 15mm keeps it dry and prevents mildew stains. Handy: berths are rarely rectangular – the underlay can simply be cut with scissors for angled corners and curves. If stains already appear, our guide helps you remove mould from the mattress.
Further tips against moisture
Musty smell in the bedroom
Removing mould from the mattress
Preventing mould on the mattress
Can I put my mattress on the floor?
Frequently asked questions
Can the Airflow mattress underlays be cut to size by hand?
YES - All mattress underlays from Matnext, including the Airflow 10mm, Airflow BALANCE 15mm, Airflow PLUS 20mm and Airflow ECO 15mm, can be cut to size easily with a good household or tailor’s scissors. Curves and corner cut-outs are also possible.
If you need further help, feel free to contact us at info@matnext.com or via our contact form.
Are the Airflow mattress underlays non-slip?
For our Airflow 10mm, Airflow BALANCE 15mm, Airflow PLUS 20mm we offer anti-slip clips.
Our Airflow ECO 15mm is non-slip even without clips thanks to the material – the natural latex provides the grip needed.
Does the mattress underlay lose stability after being cut?
NO – Thanks to their honeycomb structure, the mattress underlays keep their stability even after cutting.
TIP: Cut the material at a spot that is easy to clean afterwards. Loose threads can be removed by shaking vigorously and simply vacuumed up.
Can all versions of the mattress underlays be folded or rolled?
YES - we deliver our mattress underlays in handy boxes. They can be folded or rolled without any problem and stored to save space.
Is there a risk that the material compresses under load?
NO – The underlays are extremely hard-wearing and withstand even high loads. Thanks to the special construction, the material returns to its original shape even under localised pressure.
Which version is right for me?
All versions provide sufficient under-ventilation.
- Airflow 10mm: Ideal for small areas and everywhere no extra cushioning is needed, space is limited and a true lightweight is required.
- Airflow BALANCE 15mm: Perfect for users looking for a thinner but still stable solution who value a stylish colour. The Airflow BALANCE is our only product in anthracite.
- Airflow PLUS 20mm: Ideal for larger areas and anyone wanting extra comfort. Our 20mm version has an added cushioning effect and is perfect for anyone with enough room for 20 mm of extra build height.
- Airflow ECO 15mm: The sustainable choice for anyone who values environmentally friendly materials.
Can the Airflow mattress underlay also be used on the floor or on a plywood base?
YES – Our mattress underlays are specially developed for use on solid surfaces such as floors, plywood or motorhome beds. To prevent slipping, we recommend using our anti-slip clips.
Is the mattress underlay also suitable for use in a roof tent?
YES – especially in the roof tent, a 3D-mesh mattress underlay is recommended by all leading camping professionals.
TIP: In our experience, the slightly thinner 10mm mattress underlay is better suited for use in a hard-shell roof tent. Because of the limited space, the 20mm version can prevent the roof tent from closing. We therefore recommend choosing the Matnext Airflow mattress underlay in 10 mm thickness in the roof tent.
For more sleeping comfort. On the go, too.
Choose your height and size – we cut to measure. A dry mattress, no mould, for years.



