Canvas 20°F Mammoth Double vs Celsius 0°F: Which to Choose?
By TETON Sports | Published: 2026-10-23
Category: Comparisons
Compare the TETON Sports Canvas Mammoth Double (20°F) and Celsius 0°F sleeping bags to decide which fits your camping style, warmth needs, and space requirements.
Quick answer
Choose the Canvas Mammoth Double (20°F) if you camp with a partner and prioritize shared warmth and spaciousness. Pick the Celsius 0°F if you need a solo bag rated for colder temperatures and want a lighter, more packable option.
Warmth rating vs. comfort: what the numbers mean
The Celsius 0°F carries a lower survival temperature rating, meaning it's designed to keep you alive at 0°F, but you may not be comfortable at that extreme. The Canvas Mammoth Double is rated to 20°F, also a survival rating. For typical three-season camping, the 20°F rating is plenty warm for most couples, while the 0°F bag gives solo campers extra margin for shoulder-season or high-altitude trips.
Space and weight: two-person vs. solo
The Canvas Mammoth Double is a true two-person bag, eliminating the need to zip two bags together. It's roomy and great for snuggling, but that size means more bulk and weight to carry. The Celsius 0°F is a single bag that's easier to pack and carry, especially for backpacking. If you're car camping with a partner, the double bag is a convenience win; if you're hiking in alone, the Celsius is the practical choice.
Trade-offs to consider
- Warmth range: Celsius 0°F has a lower survival rating, so it's better for extreme cold. The Canvas Mammoth Double's 20°F rating is sufficient for most three-season camping with two people.
- Space and setup: The double bag is spacious for two but bulky. The Celsius is compact and easy to pack for solo trips. If you camp with a partner, the double bag saves setup time.
- Cost per person: At around $137, the Canvas Mammoth Double costs about $68.50 per person, while the Celsius 0°F at around $59 is cheaper for a solo camper. For a couple, the double bag can be more economical. Check current prices; they may vary.
Product facts at a glance
- Canvas 20˚F Mammoth Double: The Canvas Mammoth Double is a two-person sleep system with a soft liner, draft tubes, and a mummy-style hood designed for snuggling. This means you and a partner share body heat and stay cozy without the hassle of zipping two separate bags together.
Canvas 20˚F Mammoth Double - Celsius 0˚F: The Celsius 0°F is a large, durable 0-degree sleeping bag with a survival temperature rating—not a comfort rating. It can handle very cold nights, but you may need extra layers or a pad for actual comfort at the lower end of its rating.
Celsius 0˚F
Which bag fits your trip?
Best for
- Couples car camping who want a spacious, shared sleep system without zipping two bags together
- Solo campers or backpackers needing a lightweight, cold-rated bag for temperatures down to 0°F
Not ideal for
- Solo campers who need a bag for extreme cold (choose the Celsius 0°F instead)
- Couples who need a bag rated below 20°F (consider a different model)
