Quick Summary
Self-inflating mats use open-cell foam inside an airtight shell — open the valve and they inflate automatically. Thickness is the biggest comfort factor: 3–5 cm for summer, 5–7.5 cm for regular use, 10 cm+ for maximum comfort.
Key spec to check: R-value (insulation). Look for R-value 4+ for spring/autumn camping. Best value: Kampa Comfort 5cm at £32.99. Best all-round: Outwell Dreamcatcher 5cm Double at £84.99 (R-value 5.3).
A good night's sleep can make or break a camping trip. And while your tent and sleeping bag get all the attention, it's often your sleeping mat that makes the biggest difference. Here's everything you need to know about self-inflating mats — and how to choose the right one.
What Is a Self-Inflating Mat?
Self-inflating mats use open-cell foam inside an airtight shell. Open the valve and the foam expands, drawing air in automatically. Give it a few extra puffs to reach your preferred firmness, close the valve, and you're done. They're far more comfortable than basic foam roll mats and much easier to use than manual air mattresses.
How Thick Should a Self-Inflating Mat Be?
Thickness is the single biggest indicator of comfort:
- 3 cm — lightweight and packable, fine for summer camping or as a backup mat
- 5 cm — the sweet spot for most campers; comfortable for a full night's sleep
- 7.5 cm — noticeably more comfortable, closer to a proper mattress feel
- 10 cm — premium comfort, ideal for those who struggle to sleep on the ground
- 16 cm — near bed-like comfort, great for longer stays or glamping setups
- 20 cm — the ultimate in campsite luxury; as close to a real mattress as you'll get outdoors
If you're a side sleeper or have back or hip issues, go thicker. You won't regret it.
Should I Choose a Single or Double Mat?
Singles (typically 63–100 cm wide) are ideal for solo campers or those who prefer their own mat. Doubles (120–132 cm wide) are great for couples and save space in the tent compared to two separate mats.
What Is R-Value and Does It Matter for Camping?
R-value measures insulation — how well the mat stops cold from the ground coming through. For UK summer camping, any mat will do. For shoulder season or colder conditions, look for an R-value of 4+. The Outwell Dreamcatcher 5cm Double has an impressive R-value of 5.3, rated to -20°C — exceptional for a 5 cm mat.
What We Stock at Newquay Camping Shop
- 🛏️ Kampa Comfort 5cm Self Inflating Mat — £32.99 — great value single, 198 x 63 cm
- 🛏️ Vango POPTOP 5cm Self Inflating Mat — £99.99 — wider single at 180 x 100 cm
- 🛏️ Outwell Dreamcatcher 5cm Double — £84.99 — 5 cm double with outstanding R-value of 5.3, 195 x 120 cm
- 🛏️ Outwell Sleepin 7.5cm Double — £79.00 — great value step up in thickness for couples
- 🛏️ Vango Arcadia 7.5 Double — £110.00 — premium 7.5 cm double from Vango
- 🛏️ Kampa Luxury Double 10cm — £84.99 — maximum comfort at 10 cm, 198 x 130 cm
- 🛏️ Vango Shangri-La II 16 Grande Single — £199.00 — 16 cm single with non-slip base, rated 5.0/5 by customers
- 🛏️ Vango Shangri-La Lux 16 Double — £259.00 — 16 cm double, rated 4.8/5 from 36 reviews
- 🛏️ Outdoor Revolution Skyfall 200 Double — £229.00 — 20 cm double, 201 x 132 cm, patented Cyclone valves for fast inflation
Our Quick Recommendations
- Budget single → Kampa Comfort 5cm at £32.99
- Best all-round double → Outwell Dreamcatcher 5cm at £84.99 (exceptional R-value of 5.3)
- Maximum comfort — single → Vango Shangri-La II 16 Grande at £199.00 (rated 5.0/5)
- Maximum comfort — double → Outdoor Revolution Skyfall 200 at £229.00 (20 cm — as close to a real bed as camping gets)
- Premium couples' choice → Vango Shangri-La Lux 16 Double at £259.00
Browse our full range in store or online — and if you're not sure which is right for you, pop in and we'll help you choose.
Frequently Asked Questions: Self-Inflating Mats
How long does a self-inflating mat take to inflate?
Most self-inflating mats take 5–10 minutes to self-inflate when you first open the valve. The open-cell foam expands and draws air in automatically. For a firmer feel, add a few breaths of air through the valve before closing it. On the first use, mats may take longer as the foam needs to fully expand after being compressed in storage.
What thickness self-inflating mat do I need?
For summer camping, 3–5 cm is sufficient. For regular use, 5–7.5 cm offers the best balance of comfort and packability. If you're a side sleeper, have back issues, or camp in colder conditions, go for 10 cm or thicker. The thicker the mat, the more comfortable and better insulated it will be.
What is R-value and why does it matter?
R-value measures how well a sleeping mat insulates you from the cold ground. A higher R-value means better insulation. For UK summer camping, any R-value is fine. For spring and autumn camping, look for R-value 4 or higher. The Outwell Dreamcatcher 5cm Double has an R-value of 5.3, making it suitable for use down to -20°C.
Can I use a self-inflating mat with a sleeping bag?
Yes — self-inflating mats are designed to be used underneath your sleeping bag. The mat provides insulation from the cold ground and cushioning for comfort, while the sleeping bag traps warm air around your body. Together, they create a complete sleep system for camping.
How do I store a self-inflating mat?
Store your self-inflating mat unrolled with the valve open in a dry, ventilated space. This keeps the foam fully expanded and ready for use. Avoid storing it compressed in its stuffsack for long periods, as this can reduce the foam's ability to self-inflate over time.
