Evergreen 35ºF vs LEEF 20°F: Choose Your Teton Bag
By TETON Sports | Published: 2026-10-26
Category: Buying Guides
Deciding between the Teton Evergreen 35ºF and LEEF 20°F sleeping bags? This guide compares rectangular vs mummy design, temperature ratings, and comfort to help you pick the right bag for your camping style.
Quick answer
Choose the Teton Evergreen 35ºF rectangular bag for warm-weather car camping and roomy comfort. Choose the Teton LEEF 20°F mummy bag for cooler trips where you want a snug, heat-efficient fit without feeling confined.
Why bag shape matters for comfort and warmth
The biggest difference between these two bags is their shape. The Evergreen is a roomy rectangular bag with a canvas shell and flannel lining—it feels like sleeping in your favorite flannel sheets. The LEEF is a mummy-style bag that's tapered to hold body heat more efficiently, but its innovative cut gives you extra room to roll over and stretch out compared to traditional mummy bags.
If you sleep warm or camp mostly in mild weather, the Evergreen's spacious shape lets you move freely. If you tend to get cold or camp in temperatures near freezing, the LEEF's contoured fit helps you stay warm without feeling trapped.
Temperature rating: 35ºF vs 20°F
TETON uses survival temperature ratings, meaning the bag is designed to keep you alive at that temperature, not necessarily comfortable. The Evergreen 35ºF is best for summer nights and mild spring or fall outings. The LEEF 20°F gives you more margin for cooler weather—ideal for shoulder-season camping or higher elevations.
Be honest about the coldest conditions you'll face. If you camp only when lows stay above 50°F, the Evergreen is plenty. If you regularly see lows in the 30s or 40s, the LEEF's lower rating gives you a warmer, safer sleep.
Material and feel: canvas flannel vs lightweight mummy
The Evergreen's canvas and flannel lining make it TETON's softest bag. It's durable and cozy but heavier and bulkier—better for car camping where weight isn't a concern. The LEEF uses a lighter shell and insulation, making it easier to pack for short hikes or trips where space is tight.
Think about how you'll carry the bag. If you drive to your campsite, the Evergreen's weight is fine. If you walk even a short distance, the LEEF's lighter build is a real advantage.
Decision rules: Evergreen 35ºF vs LEEF 20°F
- Pick the Evergreen 35ºF if...: You camp in warm weather (lows above 50°F), you want a roomy rectangular bag that feels like home, and you drive to your campsite so weight doesn't matter.
- Pick the LEEF 20°F if...: You camp in cooler conditions (lows in the 30s or 40s), you want a mummy's heat efficiency but hate feeling confined, or you need a lighter bag to carry a short distance.
- Temperature rating rule of thumb: Add 10–15°F to the survival rating to estimate your comfort zone. So the Evergreen 35ºF is comfortable down to about 50°F, and the LEEF 20°F is comfortable down to about 35°F. If you sleep cold, consider a bag rated 15–20°F lower than the expected low temperature.
Product facts at a glance
- Evergreen Regular 35ºF Sleeping Bag: Canvas sleeping bag with flannel lining. Feels like flannel. Our softest bag. The plush flannel interior and durable canvas make this bag ideal for car campers who prioritize comfort over pack weight.
Evergreen Regular 35ºF Sleeping Bag - LEEF Regular 20°F: Innovatively measured above industry standard to give maximum mobility while maintaining contoured fit for heat preservation. You get the warmth of a mummy bag without feeling claustrophobic, making it a good choice for side sleepers and restless campers.
LEEF Regular 20°F
Which bag fits your camping style?
Best for
- Car campers who value softness and space over pack weight
- Warm-weather campers who rarely see lows below 50°F
- Sleepers who toss and turn and hate a tight mummy bag
Not ideal for
- Backpackers who need a lightweight, packable bag (choose the LEEF instead)
- Cold-weather campers who regularly face freezing temps (choose the LEEF instead)
