REI Co-op Trailmade 20
Fits this 3-season, 30°F comfort class planning group.
REI Co-op
- ~20°F bag
- Synthetic
Outdoor calculator
Which sleeping-bag temperature-rating is right for me?
Campers choosing an EN/ISO comfort class. The decision this page isolates is narrow on purpose: pick a comfort-temperature and insulation type from the expected night low. Capacity, season, and packed size are the published facts that survive a weekend trip.
Bag class
3-season, 30°F comfort class
Compare options with at least:
- Plan from the EN/ISO comfort number near 30°F
- Limit ratings are colder than most people sleep well
Example products for Which sleeping-bag temperature-rating is right for me?
Real products that fit this planning category. Specs come from the manufacturer’s product page. These are examples, not rankings.
Check 3-season, 30°F comfort class examples on Amazon
NEMO Equipment Tempo Synthetic Sleeping Bag-Men's 20°F/LongAmazon
Fits this 3-season, 30°F comfort class planning group.
NEMO
- Similar class
- In-stock Amazon alternative
Sea to Summit Ascent Down Sleeping Bag, 25-Degree, LongAmazon
Fits this 3-season, 30°F comfort class planning group.
Sea to Summit
- Similar class
- In-stock Amazon alternative
Compare the official examples
The table below is a side-by-side of the official examples on this page. Columns are published facts—maker, planning class, and notes taken from the official page—not scores. REI Co-op Trailmade 20, NEMO Equipment Tempo Synthetic Sleeping Bag-Men's 20°F/Long, and Sea to Summit Ascent Down Sleeping Bag, 25-Degree, Long are included so you can see how classes differ, then open the official page for the current specification.
| Example | Maker | Planning classes | Published notes |
|---|---|---|---|
| REI Co-op Trailmade 20 | REI Co-op | 20°f, 3-season, Synthetic | ~20°F bag; Synthetic |
| NEMO Equipment Tempo Synthetic Sleeping Bag-Men's 20°F/Long | NEMO | 20°f, 3-season, Synthetic | Similar class; In-stock Amazon alternative |
| Sea to Summit Ascent Down Sleeping Bag, 25-Degree, Long | Sea to Summit | 30°f, Down, 3-season | Similar class; In-stock Amazon alternative |
What to verify before you buy
- Confirm the current specification on the official product or plan page.
- Match the planning class to your measured inputs, not to a brand preference.
- This page does not quote a price or rank a brand.
- Manufacturer specifications and local rules can change and must be verified.
- Recheck this page after 2026-11-14 or sooner if a manufacturer changes a published rating.
How this estimate works
Plan about 10°F warmer than the forecast low and prefer synthetic when nights are wet.
Know the limits
- This page does not quote a price or rank a brand.
- Manufacturer specifications and local rules can change and must be verified.
- The result is a planning category, not a safety, medical, or install guarantee.
Frequently asked questions
How does the sleeping bag rating work?
It converts expected night low °f into a planning class using a published rule. Plan about 10°F warmer than the forecast low and prefer synthetic when nights are wet. The headline is a class such as 20°f, 3-season, Synthetic, 30°f, and Down, not a vendor ranking.
Is REI Co-op Trailmade 20 better than NEMO Equipment Tempo Synthetic Sleeping Bag-Men's 20°F/Long?
This page does not rank REI Co-op Trailmade 20, NEMO Equipment Tempo Synthetic Sleeping Bag-Men's 20°F/Long, and Sea to Summit Ascent Down Sleeping Bag, 25-Degree, Long. REI Co-op Trailmade 20 and NEMO Equipment Tempo Synthetic Sleeping Bag-Men's 20°F/Long are listed because they are real products with official pages that map to different or overlapping classes. The useful question is which class matches your inputs.
Do the product links earn Decision Lantern a commission?
Yes, when a product name or “View on Amazon” link goes to Amazon. Those are associate links. Decision Lantern may earn a commission at no extra cost to you. Official manufacturer pages are separate and are not tagged.
Sources
- Osprey pack sizing, Osprey. Retrieved .
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