Teton Celsius XXL Sleeping Bag (ASIN B000Z9EPES) is a rectangular cold-weather sleeping bag with SuperLoft Elite synthetic fill, a soft poly-flannel lining, and an included compression sack, sized XXL with an 18C/0°F rating on the listing.
TETON Sports built it for solo campers who want room to spread out on shoulder-season and winter drive-up trips, with a half-circle mummy hood and draft tubes to hold warmth when temperatures drop.
Related concepts: rectangular vs mummy sleeping bags, synthetic insulation, car camping sleep systems.
At a fall car-camp near Chattanooga, my friend spent the night curled like a comma in a slim mummy bag while I spread out in a Teton Celsius XXL and actually slept. I'm writing for campers who land on "best sleeping bags" searches and need to know whether this one ASIN beats a cheaper rectangle or a lighter mummy.
See our how to choose a sleeping bag guide when matching temperature ratings to your trips.
Amber Mitchell's Verdict
Bottom Line
Teton Celsius XXL (B000Z9EPES) fits car campers and cold shoulder-season trips when you want a 90-inch by 39-inch rectangle instead of a tapered mummy.
At roughly $89 with a ~4.7-star Amazon rating (as of July 2026), it is a smart pick when warmth and room matter more than trail ounces.
I'd rather lose a click than recommend a bag that pins your shoulders all night.
The honest tradeoff is weight: 7 pounds packed limits this to drive-up camps and short hike-ins, not long backpacking miles.
I pair it with our car camping tips and how to pick camping gear when building a sleep kit.
Best For
- Car campers and family drive-up tent nights when forecasts dip toward freezing.
- Tall or wide solo sleepers; listing recommends heights up to 7 feet.
- Damp fall trips where SuperLoft Elite synthetic beats moisture-sensitive down.
- Side sleepers who want rectangular room without fighting mummy taper.
Skip If
- You need sub-3 lb trail weight for multi-day backpacking.
- You camp mostly hot, humid summer nights without cold forecasts.
- You read "XXL" as a two-person bag; occupancy is 1 person.
- You want an expedition bag for sustained alpine winter storms.
Pros
- SuperLoft Elite fill with double-layer construction and draft tubes. Listing targets cold nights when you cinch the half-circle hood.
- Soft poly-flannel lining. Less clammy against skin than bare nylon on chilly evenings.
- 90"L x 39"W rectangular cut. Room to shift positions without fighting taper.
- Included compression sack. Stuff from the bottom and tighten straps per TETON instructions.
- Accessible cold rating at ~$89. XXL (18C/0°F) sizing with 18 Tog thermal resistance listed.
Cons
- 7 lb item weight. Too heavy for most backpacking itineraries even with compression.
- Bulky stuffed size. Rectangular loft eats pack space compared to mummy bags.
- Green left-zip variant on this ASIN. Right-zip campers must confirm alternate listings before buying.
- 3-season listing classification. Built for cold car camps, not mountaineering snow loads.
- Pad-dependent warmth near rating limits. Listing tips stress an insulated pad, hat, and socks.
Get the Full Picture
Amber Mitchell's Opinion
I reach for the Celsius XXL when my forecast says freezing and I'm sleeping next to the car, not when I'm counting ounces on a ridge line.
My partner and I take separate bags on those trips anyway, but I've loaned this one to a six-foot-four friend who finally stopped complaining about toe pinch.
I'd grab it for Smokies shoulder-season car camps and skip it if we were planning a July desert section where a 7 lb sack would stay rolled in the trunk.
We've slept on enough cheap rectangles to know I want flannel lining and draft tubes when the mercury actually drops.
Amazon Reviews
Buyer praise (not direct quotes): warm on cold nights, surprisingly roomy, soft lining, good value, compression sack simplifies packing.
Recurring gripes: heavy for hiking, bulky in small tents, too warm when summer temps stay mild.
For fill context, see a brief history of sleeping bags.
Overview
Specs at a Glance
| Spec | Value |
|---|---|
| Product | Teton Celsius XXL Sleeping Bag |
| ASIN | B000Z9EPES |
| Brand | TETON Sports |
| Price | ~$89 (as of July 2026; verify on listing) |
| Amazon rating | ~4.7 stars (as of July 2026) |
| Size / rating | XXL (18C/0°F) |
| Dimensions | 90"L x 39"W |
| Weight | 7 lb |
| Fill | SuperLoft Elite synthetic |
| Shell | Polyester taffeta |
| Lining | Poly-flannel |
| Thermal resistance | 18 Tog |
| Shape | Rectangular with mummy-style hood |
| Occupancy | 1 person |
| Max height | 7 ft |
| Included | Compression sack, sleeping bag |
| Best use | Car camping, cold shoulder-season drive-up trips |
How This Bag Compares (Prose Only)
vs Ultralight mummy bags: Mummies win on trail weight; Celsius XXL wins on room and flannel comfort at the car.
vs Down mummies: Down compresses smaller when dry; SuperLoft Elite synthetic handles damp nights with less fuss.
vs Other 0°F bags on Simpler Camping: See our 0-degree sleeping bag review for a sibling cold-weather pick.
Choose Celsius XXL if: car camping, cold forecasts, and spread-out sleep beat ounce counting.
Choose a mummy if: backpacking miles and pack volume come first.
Care Checklist
- Fluff the bag before bed so fill lofts fully.
- Use an insulated sleeping pad; cold ground steals warmth faster than air temp.
- Dry completely before stuffing into the compression sack.
- Store hung or loose for long-term loft; follow how to roll a sleeping bag guidance for short trips.
REI's sleeping bag care guide covers drying and storage basics.
Pair with best camping mattresses of 2024 when building a car-camp sleep stack.
Final Thoughts
Buy if you car camp in cold shoulder weather and want rectangular room with a verified 0°F synthetic bag near $90.
Skip if trail weight, summer heat, or two-person capacity drive your decision.
Fluff it once at home so the compression sack routine feels familiar before your first freezing night.
FAQ
What is the Teton Celsius XXL sleeping bag?
Teton Celsius XXL Sleeping Bag (B000Z9EPES) is a TETON Sports rectangular cold-weather bag with SuperLoft Elite synthetic fill, poly-flannel lining, a 90 x 39 inch cut, and an included compression sack.
It targets solo campers who want spread-out room on drive-up trips.
How warm is the Teton Celsius XXL sleeping bag?
The listing sizes this bag XXL (18C/0°F) with 18 Tog thermal resistance and draft tubes plus a mummy-style hood.
Use an insulated pad, dry layers, and realistic expectations; comfort near 0°F depends on your full sleep system.
How much does the Teton Celsius XXL weigh?
Listed item weight is 7 pounds with the compression sack included in the box contents.
That weight suits car camping; most backpackers prefer lighter mummies for multi-day hikes.
Is the Teton Celsius XXL good for backpacking?
Only for short hike-in trips when you accept 7 lb bulk and a large stuffed sack.
Choose an ultralight mummy if daily mileage and pack volume matter more than rectangular stretch.
Teton Celsius XXL vs mummy sleeping bags: which is better?
Choose Celsius XXL for car camping, side sleeping, and cold synthetic warmth with room to move.
Choose a mummy bag when trail weight, compressibility, and hood efficiency come first.
Is the Teton Celsius XXL worth ~$89 on Amazon?
Teton Celsius XXL (B000Z9EPES) is worth ~$89 for car campers who want a verified 0°F-rated synthetic rectangle with flannel lining and a compression sack.
Skip it if you need ultralight backpacking specs or mild-weather ventilation only.