The comfort rating, not the season name, describes your night · review
The coldest figure in this group at 0 °F, and the only bag here that publishes a quilting construction against cold spots, a named insulation, a draft tube and a box foot together.
A North Rim 0 °F sleeping bag, cold-weather mummy, big and tall.
Coleman states warmth in temperatures as low as 0 °F; a big and tall design for campers up to 6 ft 2 in; a Thermolock draft tube keeping body heat from escaping through the zipper; Coletherm hollow polyester insulation for heat retention with less weight; an adjustable hood; a no-snag zipper; dimensions of 82 by 32 inches; machine washability; and a 5-year limited warranty. The description adds a polyester ripstop cover and polyester lining, a special quilting construction that eliminates potential cold spots, a full-length draft tube and a box-shaped foot.
No standard. No fill weight. No denier. No packed size. No weight.
The fullest baffle statement on this shelf.
Along the zip: a full-length Thermolock draft tube.
Through the stitching: a quilting construction stated to eliminate potential cold spots.
At the feet: a box-shaped foot, which keeps loft where a sewn-flat bottom pinches it out.
Three bags in this group publish a draft tube and nothing else. Three publish nothing at all. This shelf’s introduction names baffle construction as one of the things to read around the insulation, and this is the only listing that reads like it was written by someone who knew why.
The caution this shelf’s buying tip asks for.
“Stay warm in temperatures as low as 0 °F” reads as a limit-style claim rather than a comfort one, and the listing does not say which it is.
Minus eighteen Celsius is a serious figure. A bare number cannot be lined up against a bag quoting EN 13537, and the difference is not in the buyer’s favor.
Not one of the seven American bags in this group names a standard.
One of two insulations named on this shelf.
Hollow polyester, stated for heat retention with less weight. The other named fill here is microfibre; the remaining five bags describe their insulation as innovative, efficient, thick hollow cotton or not at all.
What no bag in this group publishes is the grams — and on a 0 °F synthetic bag, the fill weight is the figure that would justify the rating.
The detail that decides a cold night.
Cold feet are the usual reason a cold-weather bag disappoints. A tapered bag sewn shut at the bottom crushes its fill exactly where circulation is worst; a box foot is cut with a separate panel so the loft survives.
This is the only listing in this group to publish one.
Coleman’s instructions carry the washing and the rating. Nothing here replaces them, and nothing on this page describes any product as safe.
The American Amazon store was listing it at about $94 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.
| Comfort rating | Not published as a comfort figure. The bag is published as warm in temperatures as low as 0 °F |
|---|---|
| Limit rating | Not published |
| Standard quoted | None |
| Fill power | Not applicable — synthetic fill |
| Fill weight | Not published |
| Down or synthetic | Synthetic: Coletherm hollow polyester insulation, named, stated for heat retention with less weight |
| Shell denier | Not published. A polyester ripstop cover and a polyester lining are stated |
| Baffle construction | A Thermolock full-length draft tube along the zip, a special quilting construction stated to eliminate potential cold spots, and a box-shaped foot |
| Packed size | Not published. A stuff sack is supplied |
| Weight | Not published |
| Amazon reference | B0D643KDKN |
| EAN | 0076501177046 |
More fill, and more attention to where the heat escapes. This listing publishes the three places it goes: along the zip, which a full-length Thermolock draft tube blocks; through the stitching lines, which the quilting construction is stated to eliminate as cold spots; and at the feet, which a box-shaped foot keeps lofted instead of crushing flat. That is the fullest baffle statement in this group — three bags here publish a draft tube and nothing else, and three publish nothing at all. What is still missing is the fill weight that would show how much insulation sits behind the 0 °F.
The listing does not say which kind of figure it is, and no standard is named beside it. This shelf's introduction draws the distinction: a tested bag carries a comfort figure and a limit figure measured on a heated mannequin, and a third figure sometimes appears at the bottom of the label which is not a temperature to plan a night around. "Stay warm in temperatures as low as 0 °F" reads as a limit-style claim rather than a comfort one. Minus eighteen Celsius is a serious figure, and this shelf's buying tip is the right caution: a bare number cannot be lined up against a bag quoting EN 13537.
It stops the insulation at the end of the bag being crushed by the sleeper’s feet. A tapered mummy bag that is simply sewn shut at the bottom pinches the fill flat exactly where circulation is worst; a box-shaped foot is cut with a separate panel so the loft stays. On a 0 °F bag that is not a refinement — cold feet are the usual reason a cold-weather bag disappoints. This is the only listing in this group to publish one, and the only other foot statement here is a "roomy footbox" without a shape.
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 | Comfort rating | Down or synthetic | Shell denier | Baffle construction |
|---|---|---|---|---|---|
| Coleman North Rim mummy bag, 0 °F | $94 | Not published as a comfort figure. The bag is published as warm in temperatures as low as 0 °F | Synthetic: Coletherm hollow polyester insulation, named, stated for heat retention with less weight | Not published. A polyester ripstop cover and a polyester lining are stated | A Thermolock full-length draft tube along the zip, a special quilting construction stated to eliminate potential cold spots, and a box-shaped foot |
| TETON Sports LEEF mummy bag, 20 F | $75 | Not published as a comfort figure. This variant is published as 20 F, with 0, 20 and 30 degree options offered | Synthetic. The listing states efficient insulation without naming it | Not published | Not published |
| TETON Sports 1022 TrailHead mummy bag | $65 | Not published as a comfort figure. The bag is published as a 20 degree bag | Synthetic: innovative microfibre insulation, stated to offer more loft and compressibility | Not published. A soft-to-the-touch liner is stated | A zipper draft tube, stated, with a roomy foot box |
| VENTURE 4TH V4-02-XXL three-season bag | $55 | Not published as a comfort figure. The bag is published as comfortable in temperatures from 30 to 70 °F | Synthetic. High-grade polyester is named for the construction; the fill is not named separately | Not published. The shell is stated water-resistant and machine washable | Not published. A two-way zip and a breathable design are stated for airflow |
A genuinely cold night in a tent, for a camper up to six foot two
Amazon reports what buyers took in the month before this page was last checked: at least 800.
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.
Mummy · 400 GSM synthetic · comfort +4 °C (39 °F) and limit -2 °C (28 °F) stated · 1.55 kg (3.4 lb) total · compression sack · no standard named
The only bag here to publish a comfort and a limit figure separately — and, like every other bag in this group, it names no standard behind them.
Best for: Three-season camping where a stated comfort and limit pair matters more than a published packed size.
Mummy · 300 GSM cotton and hollow-fiber fill · comfort 15 °C (59 °F) to 20 °C (68 °F) · about 1300 g (45.9 oz) · 35 × 25 cm (13.8 × 9.8 in) packed
A three-season mummy bag that publishes weight, packed size and fill density, and puts its comfort range at 15 °C (59 °F) to 20 °C (68 °F) with no standard behind it.
Best for: Spring to autumn trips where about 1300 g (45.9 oz) into a 35 × 25 cm (13.8 × 9.8 in) roll is the constraint that matters.
20 °F, no standard · 82 × 33 in · polyester shell, brushed tricot liner · no-snag zip
Five bullets, five facts and no padding: a 20 °F mummy bag of 82 by 33 inches with a drawstring hood, a brushed tricot liner and an anti-snag zip with contrasting webbing.
Best for: A straightforward cold-weather mummy bag with nothing to decode
≈ $43
