Synthetic Insulated Jackets · 2026 Comparison
Patagonia Nano Puff vs Arc'teryx Atom Hoody
Side-by-side published specs and one research-based review plus the other side's specs. No fabricated verdicts.
Quick Answer
For most synthetic insulated jackets shoppers, the Patagonia Nano Puff is the simpler pick — on published specs it's both 14 g lighter and $51 cheaper than the Arc'teryx Atom Hoody. The other side wins only on non-spec factors like fit, availability, or brand preference.
The Specs Side by Side
ClothingPatagonia
Patagonia Nano Puff
- Price (MSRP)
- $249
- Weight
- 0.36 kg (357 g)
- Ultralight
- No
- Our rating
- 9/10
Our verdict
The Patagonia Nano Puff remains one of the most versatile synthetic insulated jackets available. Its PrimaLoft Gold Eco insulation, featherweight packability, and do-everything design make it an essential layering piece for hikers, climbers, and everyday adventurers.
ClothingArc'teryx
Arc'teryx Atom Hoody
- Price (MSRP)
- $300
- Weight
- 0.37 kg (371 g)
- Ultralight
- No
- Our rating
- specs only — no full review yet
Manufacturer description
Coreloft 60 synthetic insulated hoody, ~371 g, stretch-knit side panels, DWR.
What the Numbers Say
- ▸Weight: Patagonia Nano Puff is the lighter of the two by 14 g (0.36 kg vs 0.37 kg). For thru-hiking and any pursuit where carry weight compounds across days, that delta matters.
- ▸Price: Patagonia Nano Puff is cheaper at MSRP by $51 ($249 vs $300). Real-world street prices vary, but the starting MSRP gap is consistent.
- ▸Ultralight classification: neither product is classified ultralight in their category. Both prioritize durability, features, or comfort over minimum weight.
- ▸Review coverage: only the Patagonia Nano Puff has a full research-based review (rated 9/10). The Arc'teryx Atom Hoody figures here are manufacturer-published specs only.
Detailed Breakdown
Carry weight and packed size
On the published spec sheet, the Patagonia Nano Puff comes in at 357 grams against the 371 grams of the Arc'teryx Atom Hoody. That 14-gram gap may sound trivial in isolation but compounds across multi-day trips — at 25 km a day for a week, you're carrying that delta for about 175 km of trail. Neither product is classified ultralight, so the 14-gram delta comes from incremental material and feature choices rather than a different design philosophy.
Price and total cost of ownership
MSRP gap: $51 (Patagonia Nano Puff cheaper). For most buyers that's the only price number that matters short-term. Long-term cost depends on durability and warranty handling: a product that lasts seven seasons at $300 costs less per use than a product that lasts three at $249. Without long-term field data on both we won't claim a winner on durability, but it's the lens to apply if you re-sell or replace gear infrequently. Look for current sales on either before assuming MSRP is what you'll pay.
Materials and durability
Material composition for both products comes from the manufacturer product pages and is not always reported in directly comparable units. The Patagonia Nano Puff has a full research-based review (rated 9/10); the Arc'teryx Atom Hoody carries the manufacturer's published spec only. For the reviewed product, the durability verdict in the linked review draws on published testing and owner feedback. For the spec-only product, treat material claims as starting points, not verified data.
Features and ergonomics
Manufacturer feature descriptions: the Patagonia Nano Puff (no manufacturer description filed). The Arc'teryx Atom Hoody — Coreloft 60 synthetic insulated hoody, ~371 g, stretch-knit side panels, DWR. Pay particular attention to fit, adjustability, and hand-feel — three dimensions that don't show on a spec sheet and that disproportionately determine whether you'll actually reach for the gear after the first trip.
Use-case fit
The synthetic insulated jackets category covers a wide range of trip styles. For weight-counted thru-hikes, lean toward whichever is lighter on this page — every gram in your pack rides with you for thousands of kilometers. For weekend trips and base-camp days, weight matters less and durability, comfort, and feature count matter more — the heavier of the two on this page often makes more sense in those scenarios. For three-season generalist use, our recommendation: prioritize the product you can read a full research-based verdict on — that's the Patagonia Nano Puff here.
Brand support and availability
Patagonia and Arc'teryx both produce synthetic insulated jackets for the North American and EU markets. Availability varies: smaller cottage brands may require direct-from-manufacturer ordering with 2-6 week lead times, while bigger brands stock through REI, Backcountry, and large EU outdoor chains with same-week shipping. Before buying either, check the manufacturer's warranty terms (often 1, 2, or 10 years depending on brand culture) and the brand's reputation for honoring claims on minor failures versus catastrophic ones. Our research-based review notes warranty interactions where relevant, based on owner reports.
Frequently Asked Questions
Which is lighter, the Patagonia Nano Puff or the Arc'teryx Atom Hoody?
On published manufacturer specs, the Patagonia Nano Puff is the lighter of the two by 14 grams (0.36 kg vs 0.37 kg). For ultralight backpackers counting grams in the synthetic insulated jackets category, that's a meaningful difference.
Which costs less, the Patagonia Nano Puff or the Arc'teryx Atom Hoody?
At MSRP, the Patagonia Nano Puff costs $51 less than the Arc'teryx Atom Hoody ($249 vs $300). Real-world prices fluctuate with sales and seasonal promotions, but the spec-sheet starting price is clear.
Does this site have full reviews of both products?
The Patagonia Nano Puff has a full research-based review (rated 9/10), drawing on published testing and owner feedback. The Arc'teryx Atom Hoody figures on this page are published manufacturer specs only.
Is the Patagonia Nano Puff ultralight by industry standards?
No. The Patagonia Nano Puff at 0.36 kg sits above the ultralight threshold for its category. That usually means more durability or features at the cost of carry weight — a fair trade if your trips lean toward base-camp or shoulder-season use.
Is the Arc'teryx Atom Hoody ultralight by industry standards?
No. The Arc'teryx Atom Hoody at 0.37 kg sits above the ultralight threshold. That usually buys more durability or features at the cost of weight — appropriate for car-camping, base-camp, or shoulder-season trips.
Is the price difference worth it?
The Arc'teryx Atom Hoody costs $51 more without a corresponding weight or spec advantage on paper. Unless it has a hidden benefit (better fit, longer warranty, brand reputation), the Patagonia Nano Puff is the better value spec-sheet pick.
Where can I read the full review?
Only the Patagonia Nano Puff has a full review at https://peakgearguide.com/reviews/patagonia-nano-puff. The Arc'teryx Atom Hoody does not have a full review yet — we list its manufacturer specifications only.
Bottom Line
Winner on weight: the Patagonia Nano Puff by 14 g (0.36 kg vs 0.37 kg). If your trip style punishes grams, that's the pick.
Winner on price: the Patagonia Nano Puff at $249 versus $300 for the Arc'teryx Atom Hoody — a $51 gap that may close or widen with current sales.
Our overall lean: the Patagonia Nano Puff is the safer pick because it has a full research-based review (9/10) where published testing and owner feedback corroborate the spec claims. The Arc'teryx Atom Hoody may well be excellent, but we can't say so from spec data alone.
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Full review
Patagonia Nano Puff — full review
Research-based verdict from published testing and owner feedback. Rated 9/10.
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