R-value carries the warmth; thickness decides whether your hip lands · review
The lightest air mat in this group at 17.5 ounces, and the only mat here with a published variable thickness — three and a third inches at the edges, two and a third in the middle.
An Ether 17.5 oz ultralight camping sleeping pad, backpacking air mattress.
Gear Doctors states a pack of 8.6 inches high by 3.1 inches in diameter at 17.5 oz, inflating to 76 by 25 inches with ErgoCushion contours of 3.35 inches at the edges tapering to 2.36 inches at the center, holding up to 440 lb; a small detachable foot pump sack with an anti-leak valve system, with inflate, adjust, seal and deflate under 90 seconds; heavy-duty 20D nylon coated with water-resistant TPU, a user manual and repair kit, and a hassle-free lifetime replacement with no return needed; a U-shape design that prevents slipping, with 2 R-value insulation stated for spring and summer; and endorsement by outdoor professionals.
No standard named.
A trough, not a slab.
The listing calls it an ErgoCushion U-shape, and the purpose is containment: the raised edges hold a side sleeper in place instead of letting them roll off.
This shelf’s introduction makes thickness answer one question — whether a side sleeper’s hip reaches the ground through a compressed mat. This design answers it oddly: the hip sits in the thinnest part.
It is the only mat in this group to publish two thickness figures.
The thinnest skin here, on the lightest mat here.
Denier is the mass of the yarn, and this shelf’s introduction says the base fabric denier is worth reading because that is the face against grit.
This group: 20D here, 40D on one air mat, 75D on two self-inflating ones. And this is the lightest of the four, at 17.5 ounces.
That is the whole trade in one line — and the repair kit is supplied rather than sold.
Dry air instead of breath.
Inflating by mouth puts warm damp breath into the chambers every night, where it condenses and cannot dry. That is how an air mat starts to smell, and how it stiffens in freezing weather.
This shelf’s introduction lists the inflation method for this reason. Two mats in this group use a pump sack or a built-in pump, one self-inflates, four are foam.
Published honestly.
“Perfect for spring and summer camping with its 2-R value insulation.”
The five figures on this shelf are 1.7, 2, 2.1, 4.3 and 4.3. An R of 2 is the second lowest, and the listing does not pretend it is a winter mat.
None of the eight names ASTM F3340, so the 2 ranks here and nowhere else.
Gear Doctors’ instructions carry the inflation and the repair. Nothing here replaces them, and nothing on this page describes any product as safe.
The American Amazon store was listing it at about $32 at the time of writing.
Every figure here is what Keepa held on the day this page was last revised. Offers and prices shift without warning.
Prices quoted in this text were read on October 8, 2026. The live price is at the top of the page.
| R-value | 2 R-value, published, stated for spring and summer camping |
|---|---|
| Standard quoted | None |
| Thickness | Variable and published both ways: 3.35 in at the edges tapering to 2.36 in at the center — the only variable thickness in this group |
| Packed size | 8.6 in high by 3.1 in diameter — the smallest pack in this group |
| Weight | 17.5 oz — about 496 g (17.5 oz) |
| Width | 25 inches — about 64 cm (25.2 in) |
| Length | 76 inches — about 193 cm (76 in) |
| Fabric denier | 20D nylon with a water-resistant TPU coating — the thinnest fabric in this group |
| Inflation method | A small detachable foot pump sack with an anti-leak valve system, stated at under 90 seconds to inflate, adjust, seal and deflate |
| Amazon reference | B0DSW5VSX2 |
| EAN | 0769061494035 |
To stop the sleeper rolling off. The listing calls it an ErgoCushion U-shape: 3.35 inches at the edges tapering to 2.36 in the center, so the mat forms a shallow trough that holds a side sleeper in place. This shelf's introduction makes thickness answer one question — whether a side sleeper’s hip reaches the ground through a compressed mat — and this design answers it unusually: the hip sits in the thinnest part, two and a third inches, while the raised edges do the containing. It is the only mat in this group to publish two thickness figures at all.
Thin enough to be the figure to weigh against the weight. Denier is the mass of the yarn, and this shelf's introduction says the base fabric denier is worth reading because that is the face against grit. This group publishes 20D here, 40D on one air mat and 75D on two self-inflating ones — and this is the lightest mat of the four at 17.5 ounces. That is the trade in one line: the lightest air mat has the thinnest skin, and a repair kit is supplied rather than optional.
Moisture, mostly. Inflating a mat by mouth puts warm damp breath inside it every night, and the water condenses in the chambers where it cannot be dried — which is how an air mat starts to smell and, in freezing weather, how it stiffens. A pump sack moves dry air instead. This shelf's introduction lists the inflation method among the things to note for exactly this reason. Two mats in this group have a pump arrangement, one has a built-in foot pump, one self-inflates and four are foam.
Close prices, same category: comparable camping gear. We keep only the specifications all of them publish, because a column with gaps compares nothing.
| Model | Price | R-value | Standard quoted | Thickness | Packed size |
|---|---|---|---|---|---|
| Gear Doctors Ether air mat, 17.5 oz | $32 | 2 R-value, published, stated for spring and summer camping | None | Variable and published both ways: 3.35 in at the edges tapering to 2.36 in at the center — the only variable thickness in this group | 8.6 in high by 3.1 in diameter — the smallest pack in this group |
| FUN PAC 01 mat with pillow | $30 | Not published | None | Published twice and differently in the same bullet: the heading reads 3" thick, and the text gives dimensions of 78 × 27 × 8 inches | Not published. Stated to be weighed and sized "only like a water bottle" |
| fitply Folding XPE foam pad | $25 | Published as an insulation rating of 2.1 | None. The listing states only that the pad "has been tested to standard" — the hedge this shelf's introduction warns about | 0.36 inch — about 9 mm (0.35 in) | Folded to 23.6 × 5.6 × 4.9 in |
| Stansport 503-B Pack Lite foam pad | $22 | Not published | None — as on all eight mats in this group | 3/8 inch — about 10 mm (0.39 in), the thinnest in this group | Not published. Straps are supplied to keep the pad rolled |
A side sleeper who wants the lightest air mat and will accept 20-denier fabric
Amazon reports what buyers took in the month before this page was last checked: at least 900.
The figure is a floor, rounded by Amazon, and read through Keepa — it says what buyers picked, not what a maker claims.
Specifications: the manufacturer sheet for camping and hiking gear and the matching Amazon product page. Prices and availability: Keepa. Every figure on this page names its source.
R 2.1, standard unnamed · XPE foam with aluminum film · 70.8 × 23.6 × 0.36 in · 0.7 lb
A folding XPE foam mat with a heat-reflective aluminum film and a published insulation rating of 2.1 — "tested to standard", with the standard never named.
Best for: A foam layer that packs flat rather than rolled, with a figure behind its warmth
≈ $25
531 g (18.7 oz) · 190 × 60 cm (74.8 × 23.6 in) inflated and 225 × 70 cm (88.6 × 27.6 in) flat · 40D material · inflated by breath · repair kit included · no R-value
A 531 g (18.7 oz) mat that publishes both its flat and its inflated dimensions — an honest distinction most listings skip — and no thickness and no R-value.
Best for: Lightweight trips where 531 g (18.7 oz) and a 190 cm (74.8 in) sleeping length are the specification, and warmth comes from the bag.
Built-in foot pump · 40D nylon/TPU · 78 × 27 in · 3 in in one line, 8 in in the next
The widest mat in this group at twenty-seven inches, with a built-in foot pump, a built-in pillow and side buttons to join two together — and a thickness published as three inches and as eight.
Best for: Two mats buttoned into a double bed, with no separate pump or pillow to pack
≈ $30
