Ideal for backpacking spring through fall, the men's REI Co-op Zephyr 25 recycled sleeping bag is our top synthetic design—light, compressible, cozy, and now with recycled materials throughout.

• 100% recycled synthetic polyester insulation is durable and highly compressible; the fill also retains some insulating ability if it gets wet
• Shingle construction on top provides uniform loft and prevents insulation from shifting and creating cold spots
• Offset quilt construction on the bottom optimizes bag/pad system warmth while reducing unnecessary weight and bulk
• 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; hood conforms to the head and can accommodate a backpacking pillow
• 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
• 100% ripstop recycled polyester shell offers durability with abrasion- and tear-resistance for years of use
• Durable water repellent (DWR) finish on shell helps keep bag from getting damp if it comes in contact with condensation on tent walls
• 100% recycled nylon liner is soft and silky for freedom of movement
• Nylon stuff sack included

Technical Specs

• Best Use: Backpacking
• Tested Lower Limit: 25 degrees (F) - ISO
• Tested Comfort: 38 degrees (F) - ISO
• Temperature Rating (F): 25 degrees (F)
• Temperature Rating (C): -3.9 degrees (C)
• Weight
• Regular - Left Zip: 2 lbs. 11 oz.
• Shell: Ripstop recycled polyester (bluesign® approved)
• Zipper Location: Left
• Insulation Type: Synthetic
• Fill: Recycled polyester fibers
• Lining: Recycled nylon (bluesign® approved)
• Sleeping Bag Shape: Mummy
• Fits Up To (in.)
  
• Regular - Left Zip: 72 inches
• Shoulder Girth (in.): 62 inches
• Hip Girth (in.): 56 inches
• Stuff Sack Size: 7.75 x 16.5 inches
• Stuff Sack Volume: 10 liters
• Compressed Volume
  
• Regular - Left Zip: 7.8 liters
• Gender: Men's
• Sustainability
  
• Contains materials that meet the bluesign® criteria
• Contains recycled materials
• From a Climate Neutral Certified brand