Rab Solar Eco 4 Sleeping Bag (-11°C/10°F)

Drawing on years of expertise in sustainable innovation, this design exemplifies what can be achieved with resilience and functionality. These durable synthetic sleeping bags are crafted with 100% recycled Stratus™ insulation and encased in a robust 20D recycled Atmos™ ripstop fabric. Designed to endure harsh conditions, they provide warmth and reliability in damp or condensation-prone environments—perfect for bivouacs on exposed ledges or seeking shelter in a snow cave.

The Solar Eco 4 features a double layer of Stratus™ insulation, cleverly arranged in a concertina structure to efficiently trap warm air. The elasticated internal quilting brings the insulation closer to the sleeper, significantly reducing cold air pockets. With minimal stitching to hold the insulation in place, the design minimises cold spots for superior warmth. This makes it an excellent choice for four-season climbing, mountain bivouacs, and extended backpacking trips.

The Solar Eco sleeping bag includes an adjustable hood that can be tightened snugly around the face to retain heat, along with a neck baffle designed to prevent warmth from escaping. Its ¾-length zip is complemented by an insulated baffle running along its length, acting as a draught excluder, while an anti-snag zip guard ensures smooth operation. The generously sized mummy shape allows for a variety of sleeping positions and provides room for extra layers in colder conditions.

Features

• Constructed from a 20D Atmos™ recycled polyester ripstop fabric (41gsm) with fluorocarbon-free DWR treatment for durability and environmental friendliness.
• Lined with 20D Atmos™ recycled polyester ripstop fabric (38gsm) featuring the same fluorocarbon-free DWR.
• Upper insulation comprises 180gsm recycled Stratus™ synthetic sheet in a dual-layer configuration for added loft and warmth.
• Base insulation utilises 140gsm recycled Stratus™ synthetic sheet in a dual-layer construction for optimal comfort.
• The concertina blanket construction on the upper enhances loft and traps warmth effectively.
• Offset localised quilting ensures reduced heat loss by minimising cold transmission points.
• The adjustable hood features an elasticated drawcord and cordlock adjuster for a secure fit.
• A close-fitting adjustable neck baffle reduces heat escape, enhancing thermal efficiency.
• Equipped with a YKK ¾-length main zip, complemented by a synthetic insulated zip baffle to trap warmth.
• An internal anti-snag zip guard ensures smooth and reliable operation.
• Supplied with a compression stuffsack for compact storage.
• Made with 100% recycled polyester outer and lining materials.
• Designed in a mummy shape for optimal thermal performance and comfort.
  
  

Sustainability Features

• Fluorocarbon (PFAS) free fabric
• Fluorocarbon (PFAS) free product
• Greater than 75% recycled materials
• Made with renewable energy
  
  

Specifications

Size Guide

Technology

Stratus™

Providing exceptional performance in frigid temperatures and damp environments, Stratus™ is a warm, durable, and quick-drying synthetic insulation. Lightweight yet efficient, it is ideally suited for the next mountain adventure.

Atmos™

Compact and quick to dry, with excellent water resistance, Atmos™ offers protection from the elements during mountain adventures. Crafted with super-fine yarns in a tight weave, it is both durable and windproof.

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