Source-linked specifications for the NEMO Sonic Down Mummy Sleeping Bag — -20F / Regular. This is a detailed sleeping bags record, checked on 2026-10-30; price and live stock are not verified.
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What the specs mean
The product name or temperature label is not automatically an ISO comfort rating. An independently comparable comfort number is not recorded for this variant. Treat a manufacturer label as a shopping description, not a safety guarantee. Fit also depends on usable internal length, shoulder room and your sleeping position. Pad insulation and weather matter as much as the bag.
Read the exact variant
-20F / Regular is the recorded option. Other sizes or revisions may have different dimensions, weight, or test labels.
Reported specifications
Unit conversions are calculated from the source value. Open the source tag for the originally published number.
| Specification | Manufacturer or retailer value |
|---|---|
| Minimum weight | 3.88 lb [BQ-NEMO-SONIC] |
| Packed weight | 4.19 lb [BQ-NEMO-SONIC] |
| Product temperature label | -20°F [BQ-NEMO-SONIC] |
| Fill | hydrophobic RDS down [BQ-NEMO-SONIC] |
| Fill power | 800 [BQ-NEMO-SONIC] |
| Packed volume l | 12.5 L [BQ-NEMO-SONIC] |
| Shell fabric | 20D recycled nylon ripstop [BQ-NEMO-SONIC] |
| Max user height cm | 72.0 in [BQ-NEMO-SONIC] |
| Water repellent treatment | DWR [BQ-NEMO-SONIC] |
| Footbox waterproof barrier | Yes [BQ-NEMO-SONIC] |
A blank or unverified value means the dataset cannot support a number; it does not mean zero. Each source tag opens the record used for that field.
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Verification limits
Evidence basis: manufacturer_declared. US market: confirmed. Listing status: listed. These labels do not establish current stock.
Unverified fields: comfort_f, lower_limit_f, temperature_standard
- Minimum weight and packed weight are distinct manufacturer measures.
Where these facts came from
- Sonic Down Mummy Sleeping Bag — NEMO, accessed 2026-10-30 [BQ-NEMO-SONIC]
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Questions to ask before buying
Is the listed price current?
No price or live stock data is included. Use the official product link for the current listing.
Does a nominal capacity or temperature label guarantee fit or warmth?
No. Compare exact dimensions and tested values where available, then allow for real-world conditions.
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