The Robens Couloir 350 -4°C Long is a three-season down sleeping bag with 350g of 700 fill power duck down, a 2°C comfort rating and a centre zip, in a Long fit with a 195cm body length. At 795g and packing to 24 x 16cm, it's built for backpacking, trekking and bikepacking where every gram counts.
The centre zip is what sets the Couloir apart: getting in and out is simple, and you can sit up with the bag part-open for a brew or to sort kit. Inside, responsibly sourced and traceable 95/5 duck down sits in box-wall construction so the loft stays even. A 3D hood, a redesigned neck baffle and a double-sided zip baffle work together to shut out draughts, and the shark fin foot box gives your feet room and warmth. Ratings run from a 2°C comfort through a -4°C limit to a -21°C extreme.
Product Details
Weight: 795g
Packed dimensions: 24 x 16 cm
Comfort rating: 2°C
Limit rating: -4°C
Seasons: 3
Why you'll love it
Centre zip – easy access and the option to partially open when sitting
Draught control – double-sided zip baffle and redesigned neck baffle minimise heat loss
Easy adjustment – hood and neck baffle drawcord pulls on each side, one-handed
Warm feet – shark fin foot box construction
Snag-free zip – YKK Auto Lock two-way centre zip with anti-snag guard
Packs small – compression stuff sack takes it down to 24 x 16cm
Good to know
Weight: 795g; fit: Long; size: 220 x 80 x 51cm; body length: 195cm
Filling: 350g responsibly sourced and traceable 95/5 duck down, 700 FP; box-wall construction
Temperature ratings: comfort 2°C, limit -4°C, extreme -21°C; 3 seasons
PFAS-free
Included: compression stuff sack and mesh storage sack
Temperature ratings are lab guidance, not a guarantee – your mat, shelter, clothing, the weather and your own metabolism all affect how warm you sleep.
Who it's for
Three-season campers, backpackers, trekkers and bikepackers heading out from spring to autumn, plus hut trips and lightweight travel. The Long fit suits a 195cm body length. Suits all levels.
Excellent selection, customer service and shipping. Big thanks to Nate for reaching out and getting delivered in time
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