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Three-season warmth, without a bulky pack size
Robens says:
850+ FP RDS duck down in lightweight 10D fabric. Anatomical shape, 3D-shaped hood, overstuffed draft collar & sharkfin footbox for warmth. Differential cut boosts loft & efficiency.
The Scoria UL Sleeping Bag is built for ultralight adventures where comfort, warmth and packability are essential. With 850+ FP RDS-certified 90/10 duck down and soft 10D polyester fabric, it delivers exceptional thermal performance at minimal weight.
The anatomically shaped design and differentiated filling (60% top / 40% bottom) ensure efficient insulation and optimal weight savings. Key features such as a 3D-shaped hood, overstuffed draft collar and sharkfin footbox provide full-body warmth and draft protection in cold conditions.
Inside, the sleeping bag offers practical comfort with internal drawstrings for easy adjustment and an internal pocket for small item storage. The YKK zipper includes an anti-snag cover for smooth operation, while external hang loops make airing out effortless after use.
The Scoria UL combines H-box construction with differential cut for improved loft and durability, making it a go-to choice for lightweight missions where reliable sleep is non-negotiable.
Our Verdict
The Robens Scoria UL-6C Down Sleeping Bag is built for colder, lightweight trips where pack size still matters. At 700g in Regular, with 403g of 850-fill-power duck down, it offers a strong warmth-to-weight balance for a hooded, zipped sleeping bag.
The -6°C limit rating puts it firmly into colder three-season use for me; the 0°C comfort rating keeps expectations more realistic. The box-wall construction, differential cut, draft collar and insulated zip baffle all help the down loft efficiently and reduce heat loss around common cold spots.
I like that Robens has used a comfort mummy shape rather than an overly narrow cut, as that gives a bit more room to move without wasting too much warmth. The sharkfin footbox also makes sense, helping reduce compression around the toes. The 10D fabric keeps weight low, but it will need careful handling.
For lightweight backpacking, bikepacking and colder three-season trips, it looks like a warm, compact and well-featured down bag.
- Reviewed by Ultralight Outdoor Gear
Features
- Comfort mummy shape enhances freedom of move
- Insulated face and neck baffle
- Full-length insulated zip baffle
- Redefined neck baffle position and profile minimise draughts and heat loss
- Hood drawcord differentiated by thickness and structure for easy adjustment by touch
- Shark fin foot box with extra insulation
- Anti-snag zip guard
- Compression stuff sack
- Mesh storage sack
- Lining material with high moisture transport for comfort
- Responsibly sourced & traceable 850+ FP duck down
- Hanger loops
- PFAS-free
Specifications
Regular
- Weight: 700g
- Dimensions: 205 x 74 x 49 cm (LxWxW)
- Body Length: 180cm
- Pack Size: 35 x 16cm
- Temp Comfort: 0
- Temp Limit: -6
- Temp Extreme: -23
- Fill Power: 850
- Fill Weight: 403g
Long
- Weight: 768g
- Dimensions: 220 x 76 x 52 cm (LxWxW)
- Body Length: 195cm
- Pack Size: 33 x 17cm
- Temp Comfort: 0
- Temp Limit: -6
- Temp Extreme: -23
- Fill Power: 850
- Fill Weight: 445g
Material & Construction
- Shell: 10D 540T polyester ripstop, 24g/m2
- Lining: 10D 540T polyester ripstop, 24g/m2
- Filling: Responsibly sourced & traceable duck down 90/10
- Construction: Box wall, Differential cut
- Zipper: YKK Auto lock - two-way open - anti snag cover
- Carrybag: Sides: 100% Nylon, Bottom: 100% Polyester
- Colour: Orange
- Responsibly sourced & traceable duck down
