Unzipped (Emerald Turq)
REI Co-op Zephyr 20 Sleeping Bag - Men's
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Shop similar productsThe men's REI Co-op Zephyr 20 sleeping bag is our top synthetic design—light and compressible, with construction that maximizes comfort and minimizes weight for backpacking spring through fall.
Fill
Polyester fibers
Temperature Rating (F)
20 degrees (F)
- With an International Organization for Standardization (ISO) T-Comfort rating of 32°F and T-Limit rating of 21°F, this bag is suitable for 3-season use
- Synthetic polyester insulation is durable and highly compressible; the fill also retains some insulating ability if it gets wet
- Shingle construction with overlapping layers distributes insulation evenly and prevents cold spots
- Mummy shape is thermally efficient, yet roomy enough from shoulder to knee to ensure sleeping comfort
- Trapezoidal footbox gives room to wiggle toes and the baffle in the toe box holds extra insulation in place to help keep feet warm
- Hood, insulated muffler and full-length zipper draft tube keep warmth in and cold out
- New zipper cover and internal antisnag strip combine for easy zipping
- Stash pocket under collar holds small essentials
- Differentiated drawcords allow quick hood and neck adjustments in the dark
- Ripstop polyester shell offers durability with abrasion- and tear-resistance for years of use
- Nylon stuff sack and polyester storage bag are included
Imported.
Many sleeping bags are rated for temperature by an independent testing protocol. REI and the broader industry now use the International Organization for Standardization (ISO) 23537 protocol, which improves on the older European Norm (EN) 13537 standard; you may still see older items in our assortment that were only EN tested. With either protocol, each bag gets a Comfort (or T-Comfort) rating and Lower Limit (or T-Limit) rating. The Comfort rating is the lowest temperature at which the bag will keep the average "cold sleeper" comfortable, and the Lower Limit rating is the lowest temperature at which the bag will keep the average "warm sleeper" comfortable. Ratings are based on a person wearing one long underwear layer and a pair of socks, sleeping on an insulated surface with a minimum R-value of 5.38. Many brands use the Comfort rating for women's bags and the Lower Limit rating for men's and unisex bags. Everyone's body and sleep comfort differ, and conditions of use (posture, clothing, sleeping pad R-value, wind, humidity, etc.) affect total insulation, so EN and ISO ratings are intended as a guideline to help you compare products, rather than a guarantee of warmth.View all REI Co-op Men's Sleeping BagsBest Use Backpacking
Tested Lower Limit 21 degrees (F) - ISO
Tested Comfort 32 degrees (F) - ISO
Temperature Rating (F) 20 degrees (F)
Temperature Rating (C) -6 degrees (C)
Shell Ripstop polyester (bluesign® approved)
Zipper Location Left
Insulation Type Synthetic
Fill Polyester fibers
Lining Nylon taffeta (bluesign® approved)
Sleeping Bag Shape Mummy
Stuff Sack Size 7 x 15.25 inches
Stuff Sack Volume 7.5 liters
Gender Men's
Sustainability Contains materials that meet the bluesign® criteria
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