RAB Solar Eco 3 Sleeping Bag | -8°C, Stratus Fill, Wide Mummy Shape


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High performance, lower impact. The Rab Solar Eco bag is built with recycled fabrics and recycled Stratus™ insulation. Ideal for the mountain bothy goer, the globetrotting backpacker, and trekking in cool conditions, with a wide mummy shape for a comfortable night's sleep.

Important Specs: 

  • Rab Sleep Limit: -8°C (18°F)
  • Stratus Filling (Synthetic Insulation)
  • Wide Mummy Shape
  • Compression stuff sack included 
  • 40cm x 22cm Pack size & 1235g Weight
  • Max User Height: 185cm / 6ft (72.8")

Rab has taken everything they know about lower impact design and applied it to what they do best. These resilient synthetic bags are filled with 100% recycled Stratus™ insulation, and lined and covered with a tough, 20D, recycled Atmos™ fabric with ripstop. Hardwearing, warm, and dependable, they are fast drying and cope with condensation or damp conditions.

The Solar Eco 3 is insulated with a double layer of Stratus™ insulation arranged in a concertina structure to trap warm air. The elastic internal quilting brings the lining and insulation closer to the user, helping to reduce pockets of cold air. The localised quilting simply means that the stitching which holds the insulation in place has been minimised to reduce the chance of cold spots. Perfect for three season climbing trips, mountain bivis, and backpacking adventures.

The Solar Eco has an adjustable hood which can be cinched in snug around the face to shut out the chill and an adjustable neck baffle to stop the heat escaping. The ¾ length zip has an additional baffle along its length that acts as an effective draught excluder with an anti-snag zip guard. The wide mummy fit offers space to find your most comfortable sleeping position, with room for extra layers should night-time temperatures plummet.


  • Stratus™: Offering you superior performance in freezing temperatures and damp conditions, Stratus™ is a warm, resilient and fast drying synthetic insulation. Lightweight and effective, it's perfect for your next mountain ascent.
  • Atmos™ Fabric: Packable and fast drying, with high water resistance, Atmos™ protects from the weather on mountain adventures. Made using super-fine yarns in a tight construction it's durable and windproof. 
  • Fluorocarbon-Free Product: This product no longer contains fluorocarbons. Whether that’s in a DWR, on the zips, the threads or in the fabric
  • Dual layer concertina blanket construction on upper for improved loft and warmth
  • Offset localised quilting to reduce cold transmision
  • Adjustable hood closure system with elasticated drawcord and cordlock adjuster
  • Close fitting adjustable neck baffle design for improved warmth retention
  • YKK 3/4 length main zip with synthetic insulated zip baffle to trap warmth
  • Anti snag internal zip guard
  • Compression stuffsack included
  • Outer: 100% recycled polyester. Lining: 100% recycled polyester
  • Wide Mummy shape


  • 20D Atmos™ recycled polyester ripstop fabric (41gsm) with fluorocarbon free DWR
  • Lining: 20D Atmos™ recycled polyester ripstop fabric (38gsm) with fluorocarbon free DWR
  • Upper: 140gsm Recycled Stratus Synthetic Sheet Insulation in a dual layer construction
  • Base: 100gsm Recycled Stratus Synthetic Sheet Insulation in a dual layer construction
  • Size: Regular, left zip
  • Weight: 1235 g / 43.6 oz
  • Sleeping Bag Length: 215cm / 84.6"   
  • Max User Height: 185cm / 72.8"  
  • Internal Shoulder Girth: 150cm / 59.1"   
  • Internal Hip Girth: 128cm / 50.4"   
  • Internal Foot Girth: 108cm / 42.5" 
  • Rab Sleep Limit: -8°C (20°F)
  • Packed Size: 40cm x 22cm (15.7" x 8.6")

EN (13537:2012) Temperature rating:ISO EN:

  • Comfort: 0°C (32°F),
  • RAB Sleep Limit: -8°C (21°F)
  • Extreme: -24°C (-11°F)

What to know more about sleeping bags? RAB has excellent articles & videos on Sleeping Bags & what insulation is. 

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