Used inside the nitrous is a collection of 3d, vertical v-baffles filled with 800+ loft dwr down; a full zip allows venting while the box foot prevents cold spots; and theres a draft tube, three-quarter hood and internal chest drawcord. The nitrous is also versatile. Other features include vapour vent fabric with a water-repellent coating and a zip protector on the ykk zip. 800+ loft dwr-treated duck down is our premium choice a must for the gram counters. This high-lofting white duck down delivers luxurious warmth at a fine, feathery weight. This down has excellent compactability and loft recovery. Down is the best insulation for lightweight sleeping bags due to its loft, compressibility and durability. However, this golden fibre has a failing: its ability to insulate drastically decreases when it is wet. Nitrous sleeping bags are made using lightweight and highly breathable 15-denier vapour vent fabric. This strong, compressible and highly breathable fabric is downproof by construction: the tight weave keeps the down in but allows water vapour to escape. This reduces the possibility of clamminess and allows the down to loft fully for maximum performance.
Used inside the nitrous is a collection of 3d, vertical v-baffles filled with 800+ loft dwr down; a full zip allows venting while the box foot prevents cold spots; and theres a draft tube, three-quarter hood and internal chest drawcord. The nitrous is also versatile. Other features include vapour vent fabric with a water-repellent coating and a zip protector on the ykk zip. 800+ loft dwr-treated duck down is our premium choice a must for the gram counters. This high-lofting white duck down delivers luxurious warmth at a fine, feathery weight. This down has excellent compactability and loft recovery. Down is the best insulation for lightweight sleeping bags due to its loft, compressibility and durability. However, this golden fibre has a failing: its ability to insulate drastically decreases when it is wet. Nitrous sleeping bags are made using lightweight and highly breathable 15-denier vapour vent fabric. This strong, compressible and highly breathable fabric is downproof by construction: the tight weave keeps the down in but allows water vapour to escape. This reduces the possibility of clamminess and allows the down to loft fully for maximum performance.
Used inside the nitrous is a collection of 3d, vertical v-baffles filled with 800+ loft dwr down; a full zip allows venting while the box foot prevents cold spots; and theres a draft tube, three-quarter hood and internal chest drawcord. The nitrous is also versatile. Other features include vapour vent fabric with a water-repellent coating and a zip protector on the ykk zip. 800+ loft dwr-treated duck down is our premium choice a must for the gram counters. This high-lofting white duck down delivers luxurious warmth at a fine, feathery weight. This down has excellent compactability and loft recovery. Down is the best insulation for lightweight sleeping bags due to its loft, compressibility and durability. However, this golden fibre has a failing: its ability to insulate drastically decreases when it is wet. Nitrous sleeping bags are made using lightweight and highly breathable 15-denier vapour vent fabric. This strong, compressible and highly breathable fabric is downproof by construction: the tight weave keeps the down in but allows water vapour to escape. This reduces the possibility of clamminess and allows the down to loft fully for maximum performance.
Used inside the nitrous is a collection of 3d, vertical v-baffles filled with 800+ loft dwr down; a full zip allows venting while the box foot prevents cold spots; and theres a draft tube, three-quarter hood and internal chest drawcord. The nitrous is also versatile. Other features include vapour vent fabric with a water-repellent coating and a zip protector on the ykk zip. 800+ loft dwr-treated duck down is our premium choice a must for the gram counters. This high-lofting white duck down delivers luxurious warmth at a fine, feathery weight. This down has excellent compactability and loft recovery. Down is the best insulation for lightweight sleeping bags due to its loft, compressibility and durability. However, this golden fibre has a failing: its ability to insulate drastically decreases when it is wet. Nitrous sleeping bags are made using lightweight and highly breathable 15-denier vapour vent fabric. This strong, compressible and highly breathable fabric is downproof by construction: the tight weave keeps the down in but allows water vapour to escape. This reduces the possibility of clamminess and allows the down to loft fully for maximum performance.
Last updated at 03/04/2026 11:19:33
One Planet Nitrous -1 to -3 Down Sleeping Bag Series Nitrous -3° | 800+ Loft DWR / Regular | Left Zip
Free delivery
originally posted on dwights.co.nz
Used this for the first time on the Three Tarns Pass trip across the Spenser Mountains. A beautiful wee bag. We were in huts all night, but Downies Hut inland from Murchison was a cool night and the Hut old with plenty of gaps (Shame on DOC). I slept well but another 2 or 3 degrees down and I would have slept but been on the cool side. As a product this is a top bag. I suppose the best reference I can give it is that I am going to buy the next warmer model as well. Very light, very compact, very snuggly. I can only assume that these bags are pure down and not down/feather.
originally posted on dwights.co.nz
Really happy with my nitrous! I was reluctant to spend that much on a sleeping bag but went with it and have been super impressed! Took this sleeping bag while hiking the Haute Route in Switzerland where we were camping at high altitude and I did not feel the cold once!! This is coming from someone who feels the cold all the time!! It bags down so small too so was no issue fitting in my bag.
originally posted on dwights.co.nz
Love these sleeping bags, got one for each of the kids... I got the small which doesn't so you don't get to choose which side the zip is on but you do with the regular which is great as I purchased it for a left hander.The hood cord would be better on the outside and could be nice to have a cover for the internal zip but very minor - great bag and super light and small!
| Intended use | lightweight bushwalking, bike/backpacking |
| User height | Small 177cm; Regular 187cm; Large 195cm |
| Stuff sac size | Small 4.5L; Regular 4.5L; Large 4.5L |
| Weight (800-850 fill) | Small 510g; Regular 547g; Large 584g |
| Shape | mummy |
One Planet Nitrous -1 to -3 Down Sleeping Bag Series Nitrous -3° | 800+ Loft DWR / Regular | Left Zip
Free delivery
Used this for the first time on the Three Tarns Pass trip across the Spenser Mountains. A beautiful wee bag. We were in huts all night, but Downies Hut inland from Murchison was a cool night and the Hut old with plenty of gaps (Shame on DOC). I slept well but another 2 or 3 degrees down and I would have slept but been on the cool side. As a product this is a top bag. I suppose the best reference I can give it is that I am going to buy the next warmer model as well. Very light, very compact, very snuggly. I can only assume that these bags are pure down and not down/feather.
Really happy with my nitrous! I was reluctant to spend that much on a sleeping bag but went with it and have been super impressed! Took this sleeping bag while hiking the Haute Route in Switzerland where we were camping at high altitude and I did not feel the cold once!! This is coming from someone who feels the cold all the time!! It bags down so small too so was no issue fitting in my bag.
Love these sleeping bags, got one for each of the kids... I got the small which doesn't so you don't get to choose which side the zip is on but you do with the regular which is great as I purchased it for a left hander.The hood cord would be better on the outside and could be nice to have a cover for the internal zip but very minor - great bag and super light and small!
I bought this bag after searching around for very small light weight bags without compromising too much in heat rating. The price to weight/size ratio on this bag is hard to beat.My main use will be bikepacking, with some light weight tramping thrown in, the bag is tiny when packed down, its smaller then my puffer jacket. It does appear to be made from very light materials so I would imagine it won't last forever but so far I haven't had any issues. Actual weight for mine (regular size) is 600g in its bag. Also the regular is fine for me (184cm tall).
Lightweight and compact sleeping bag. Has a compressed sack and normal bag sack included. Great price and comfort compare to other branded sleeping bags. I am 163cm and the small size fits me properly with nice room to move around inside. It is better than my old sleeping bag kthmndu odyssey 5c, 1.06kg. Will recommend.
I bought this sleeping bag only a few weeks ago and used it for the first time this weekend. I LOVE everything about this bag. The little glow tab on the zipper for easy location when you have to get up in the night. I have always rolled my sleeping bags as I turn over in the night and wake up in the morning in a tight cocoon spiral. This bag stayed flat all night. Great that I could order a small size and therefore have a bit less bulk and weight to carry and the extra room in the toe box is excellent. On top of that it is really warm and I removed a couple of layers during the night.
Tested it last night. 6c when I went to bed. Felt cold in this bag. Added second layer of merino and down jacket. Woke up cold at midnight, 3c. Stayed cold all night. 0c in the morning.This bag is probably fine for camping by the beach in summer but should not be rated -3c.
Fly camping for the night with my indicating dog in the scrub on the top of the range, was supposed to get 1mm rain but ended up with 5mm. The wind picked up and was blowing the rain under my fly. Camp mat decided to have a hole in it and went flat 3 times during the night. Only time i woke up was to the mat being flat. Had a puddle of water in the foot box of this bag in the morning, mat was soaked and flat. Was still nice and warm and had a pretty good sleep, definitely recommend this bag especially considering the weight and packability.
Just received this today (will update my review once I’ve tested it properly) and I’m very happy so far. I’m 177cm and 50kg and got the small. I was hesitant to go for a mummy-style bag because I’m a side or front sleeper and like to put a knee right up so hate being restricted but tested in the living room and, although it’s narrower at the foot box, it’s much wider in the waist area so I can get my knee right up far easier than in my old bag. It’s clearly very well made and feels super luxurious. The zip snags quite a bit but I think that’s expected with such fine fabric. One thing to note is that the ¾ hood is super lame and more like a bit of a head rest than a hood because it’s too small to actually cover your head (and mine isn’t big!). I would get the cocoon ... MoreJust received this today (will update my review once I’ve tested it properly) and I’m very happy so far. I’m 177cm and 50kg and got the small. I was hesitant to go for a mummy-style bag because I’m a side or front sleeper and like to put a knee right up so hate being restricted but tested in the living room and, although it’s narrower at the foot box, it’s much wider in the waist area so I can get my knee right up far easier than in my old bag. It’s clearly very well made and feels super luxurious. The zip snags quite a bit but I think that’s expected with such fine fabric. One thing to note is that the ¾ hood is super lame and more like a bit of a head rest than a hood because it’s too small to actually cover your head (and mine isn’t big!). I would get the cocoon in hindsight because of this but if you’re not worried about the hood then I think it’s perfect.
Only used my One Planet Nitrous for two nights up in the Ruahines but very pleased, it packs down very small compared to my other bag and even on a cool night under a fly with Temps of single digits I was warm as toast!! . I might have fitted a small size but got a regular and plenty of room for me at 172cm.
| Intended use | lightweight bushwalking, bike/backpacking |
| User height | Small 177cm; Regular 187cm; Large 195cm |
| Stuff sac size | Small 4.5L; Regular 4.5L; Large 4.5L |
| Weight (800-850 fill) | Small 510g; Regular 547g; Large 584g |
| Shape | mummy |
