DELIVERY
FREE UK delivery for orders over £40. FREE Next Day DPD delivery with orders over £60NAP-PAK ARCTIC R11 MUMMY LITE INFLATABLE SLEEPING MAT
Regular price £99.99
The warmth you want. The weight you don’t.
The Nap Pak Arctic R11 Mummy Lite is the lighter, space-saving evolution of the Arctic R11 inflatable sleeping mat. Designed in a weight-saving mummy shape, it cuts excess bulk and brings the mat down to just 600g, making it a superb choice for backpackers, bikepackers and anyone who wants dependable insulation without carrying more than they need. Packs down to a class-leading 24 x 10cm.
✔ R Value: R11 (under test standard ASTM F3340)
✔ Only 600g (without stuff sack)
✔ Packes to 24x10cm
✔ 10cm Thickness
✔ 3-layer foil
✔ Compact, light, warm and affordable
The Nap Pak Arctic R11 Mummy Lite is the lighter, space-saving evolution of the Arctic R11 inflatable sleeping mat. Designed in a weight-saving mummy shape, it cuts excess bulk and brings the mat down to just 600g, making it a superb choice for backpackers, bikepackers and anyone who wants dependable insulation without carrying more than they need. Packs down to a class-leading 24 x 10cm.
✔ R Value: R11 (under test standard ASTM F3340)
✔ Only 600g (without stuff sack)
✔ Packes to 24x10cm
✔ 10cm Thickness
✔ 3-layer foil
✔ Compact, light, warm and affordable
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SKU : AIR079-TL
DESCRIPTION
The Nap Pak Arctic R11 Mummy Lite is the lighter, space-saving evolution of the Arctic R11 inflatable sleeping mat. Designed in a weight-saving mummy shape, it cuts excess bulk and brings the mat down to just 600g, making it a superb choice for backpackers, bikepackers and anyone who wants dependable insulation without carrying more than they need. Packs down to a class-leading 24 x 10cm.
✔ R Value: R11 (under test standard ASTM F3340. Click here to view test report - Tested to the same standard as premium brands)
✔ Only 600g (without stuff sack)
✔ Packs down to 24(L) x 10(Dia)cm
✔ 10cm Thickness
✔ 3-layer foil
✔ Compact, light, warm and affordable
✔ Mummy shaped - perfect for smaller body types and women
SHIPPING & RETURN
UK DELIVERY
We aim to have your order shipped out from our warehouse the next working day.
Royal Mail Standard delivery charges apply to orders under £40
FREE Royal Mail Standard delivery is offered for orders over £40.
NEXT DAY TRACKED DELIVERY
DPD Next Day Tracked Delivery is offered at a charge of £6 per order under £60 and FREE over £60 - this can be selected at checkout.
We are only open Monday - Friday.
If the order is placed before 12pm GMT, we will ship on the day. Otherwise it will be shipped the next working day at the earliest collection time possible..
REVIEWS
FEATURES
Weight 600g (without stuff sack)
Volume: Thickness: 10cm
Dimensions: 183 x 50 x 10cm (Mummy Shape) / Packed size: 24(L) x 10(Dia)cm
Material SHELL: 20D nylon ripstop INSULATION: 3 layer foil insulation Valve: TPU
NAP-PAK ARCTIC R11 – FAQs
What does “R-Value 11” mean, and why should I care?
The R-Value measures how well a mat resists heat loss to the ground. An R-Value of 11 is exceptionally high and is measured using the ASTM F3340 industry standard. This places the Nap-Pak Arctic well above typical winter mats, which often sit around R6–R8, and means it is designed to significantly reduce heat loss to cold ground when used as part of an appropriate sleep system.
Can a £99.99 mat really compete with £200+ alternatives?
Yes. Independent ASTM F3340 testing confirms an R-Value of 11, which compares very favourably with many premium mats at higher price points. The Nap-Pak Arctic is designed to deliver outstanding insulation performance and value, challenging the usual price-for-performance expectations.
Will it keep me warm on snow or in winter conditions?
Based on its ASTM-tested R-Value and three-layer aluminium film insulation, the Nap-Pak Arctic is designed to reduce heat loss from cold ground, including snow and winter conditions. As with all mats, perceived warmth depends on the complete sleep system (sleeping bag, clothing, shelter and conditions), but its insulation level places it firmly in the four-season category.
How comfortable is it compared to other mats?
At 10 cm thickness with interlinked air-cell baffles, it provides a supportive, cushioned sleeping surface that keeps you well off the ground and distributes weight evenly, offering noticeably more comfort than thinner or basic budget mats.
Is it lightweight and packable for backpacking?
Yes. Weighing approximately 900g and packing down to around 28 × 14 cm, it offers a strong balance of warmth, comfort and packability for year-round backpacking use.
How durable is the mat? Will it puncture easily?
The shell uses 20D ripstop nylon, which balances low weight with durability. Normal use on grass, soil, or inside a tent is well within design intent. As with all lightweight inflatable mats, sharp rocks, spiky vegetation or rough ground should be avoided or protected with a groundsheet.
How easy is it to inflate and deflate? Do I need extra gear?
The dual-layer TPU valve allows fast inflation, easy firmness adjustment and rapid deflation. It can be inflated by breath, though using a pump sack or compatible pump reduces moisture build-up and speeds things up (see Wee Banshee and Puff Sack Inflation Drybag).
Does it make sleeping noises (crinkle) like some foil-insulated mats?
Real-world use shows only minimal rustling, significantly less than many foil-insulated mats, and not enough to disturb sleep for most users.
Can the mat be inflated hard enough to stop “bottoming out” when sitting on it?
Like all inflatable sleeping mats, the Nap-Pak Arctic is designed primarily for lying down, where body weight is spread evenly. When sitting, weight is concentrated into a small area, so compression is normal even at high inflation. Over-inflating to counter this is not recommended, as it can reduce comfort and stress the mat. Many experienced campers use a small foam pad or additional inflatable seat for sitting (see PAK-PAD Air Seat ).
Is there a maximum user weight for the Nap-Pak Arctic?
We don’t state a specific maximum user weight. Like most air-inflated sleeping mats, it’s designed and tested for normal adult use, focusing on durability, air retention and insulation performance rather than a fixed weight rating. When used as intended, it’s suitable for typical adult users.
What if I get cold in real use?
Warmth depends on the complete sleep system (mat, sleeping bag, clothing and conditions). If extra insulation is needed, adding a closed-cell foam mat underneath or upgrading other elements of your sleep system will increase overall warmth. The mat’s role is to reliably reduce ground heat loss.
Can it handle long-term expedition use?
For frequent, extended trips in harsh terrain, treat it as high-performance, value-for-weight gear rather than an armour-plated expedition mat. It delivers excellent warmth and packability for its weight and price, but like all lightweight gear, will wear faster under extreme or abrasive use.
What’s the real “catch” here?
There’s no catch and no engineered compromise on insulation performance or packability. The practical trade-offs are those typical of lightweight inflatable gear: some care is needed on rough ground, and inflation is easier with a pump. These don’t undermine the core performance when used as intended.