Solar Ultra 1 Sleeping Bag (-4C)
Combining advanced construction and heat retaining TILT technology, with recycled fabric and recycled Stratus™ insulation, the Solar Ultra is a high-performance synthetic bag. Ideal for lightweight mountain ascents in spring and summer conditions, the Solar Ultra 1 is warm, durable, and low bulk.
Product Characteristics
What It's Best For
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Material Facts
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Material Facts
Solar Ultra 1 Sleeping Bag (-4C)
Total Recycled Content* i
|
92% |
Fabric i
|
100% |
Outer | 100% |
Liner | 100% |
Insulation | 100% |
Zips i
|
39% |
Trims i
|
4% |
Fluorocarbon Content i
|
|
Fabric i
|
No |
Outer | No |
Liner | No |
Insulation | No |
Zips i
|
Yes |
Trims | No |
Manufactured in United Kingdom | |
*Calculations based upon the weight of a regular length sleeping bag. | |
The Specifics
- Weight:(Regular) 880g/31.0oz, (Long) 950g/33.5oz
- EN (13537:2012) Temperature rating:ISO EN: Comfort: 6°C (45°F), Limit: 1°C (35°F), Extreme: -14°C (5°F)
- Rab Sleep Limit:-4°C (25°F)
- Packed Size:35cm x 20cm (13.8in x 7.9in)
- Product Code:QSS-05
- 20D Atmos™ recycled nylon ripstop fabric (38gsm) with fluorocarbon free DWR
- Lining: 20D Atmos™ recycled polyester ripstop fabric (41gsm) with fluorocarbon free DWR
- Skrim: 100% polyester scrim with aluminium coating (15gsm)
- Upper: Recycled Stratus Synthetic Sheet Insulation in a triple layer construction (100% Recycled Polyester 100gsm/100gsm/40gsm )
- Base: Recycled Stratus Synthetic Sheet Insulation in a dual layer blanket construction (100% Recycled Polyester 40gsm/40gsm)
- Internal TILT Scrim Technology on upper for reduces radiant heat loss
- Triple layer concertina blanket construction on upper for improved loft and warmth
- Elasticated internal quilting to draw insulation towards user and eliminate cold spots
- Offset localised quilting to reduce cold transmision
- Reduced volume hood for better heat retention
- Close fitting adjustable neck baffle design for decreased heat loss
- YKK 3/4 length main zip with synthetic insulated zip baffle to trap warmth
- YKK Anti-snag zip insert and anti snag internal zip guard
- Compression stuffsack included
- Outer: 100% recycled polyester. Lining: 100% recycled polyester
- Tapered Mummy Shape
Sleeping Bag Size Guide

Tapered Mummy | Regular | Long |
---|---|---|
Sleeping Bag Length | 215cm / 84.6 in | 230cm / 90.6 in |
Max User Height | 185cm / 72.8 in | 200cm / 78.7 in |
Internal Shoulder Girth | 142cm / 55.9 in | 144cm / 56.7 in |
Internal Hip Girth | 120cm / 47.2 in | 122cm / 48.0 in |
Internal Foot Girth | 100cm / 39.4 in | 102cm / 40.2 in |
Pack Size | 35cm x 20cm | 35cm x 20cm |




What is TILT technology?
A radical, heat retaining tech that works like an emergency blanket reflecting heat back towards your body, while maintaining breathability and comfort. Boosting thermal efficiency, it keeps you warm when the temperature plummets.




What is TILT technology?
A radical, heat retaining tech that works like an emergency blanket reflecting heat back towards your body, while maintaining breathability and comfort. Boosting thermal efficiency, it keeps you warm when the temperature plummets.




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.




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.




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.




Rab Sleep Limit Explained
Need help choosing the right bag for your next adventure? This is our real-world assessment of a sleeping bag's usable temperature limit. Find out how we arrive at this rating and how you can use it to select your bag.




Rab Sleep Limit Explained
Need help choosing the right bag for your next adventure? This is our real-world assessment of a sleeping bag's usable temperature limit. Find out how we arrive at this rating and how you can use it to select your bag.




Solar Ultra Collection
Jam-packed with tech and built with recycled materials, the Solar Ultra embodies our drive to create more sustainable gear at the pinnacle of performance. Combining advanced construction, TILT technology, and recycled fabric and insulation.




Solar Ultra Collection
Jam-packed with tech and built with recycled materials, the Solar Ultra embodies our drive to create more sustainable gear at the pinnacle of performance. Combining advanced construction, TILT technology, and recycled fabric and insulation.