# UltraLite Sleeping Bag: specs and price

**Price (US):** $660 at westernmountaineering.com, as of 2026-08-07. A sourced, dated price of record — other retailers (incl. Amazon) may be lower. Among the 17 sleeping bags we track it is the most expensive; category median $200.
**Brand:** Western Mountaineering
**Deskmark:** Bronze Deskmark — pay-blind category standing 41/100, #12 of 13 in class (independent, computed from sourced data, never for sale).
**Price tracked since:** June 2026 (last change 2026-08-07: $640 → $660)

## Specifications

| Spec | Value |
| --- | --- |
| Price (US) | $660 |
| Brand | Western Mountaineering |
| Temperature rating f | 20 |
| Insulation type | down |
| Fill power | 850 |
| Shape | mummy |
| Packed weight (lb) | 1.81 |
| Packed size | 7 x 13 in |
| Zipper side | left or right |
| Product note | 850+ FP ethically-sourced premium goose down; USA made; full-length #5 YKK zipper; 6'0" version weighs 1 lb 13 oz |

## Where it stands

At $660, the UltraLite Sleeping Bag is #16 cheapest of the 17 sleeping bags we track, where the median is $249.95. On the spec sheet, its packed weight of 1.81 lb is below the median of the 13, its temperature rating f of 20 is at the median of the 19, and its fill power of 850 is at the median of the 11.

## Price over time

Since 2026-06-27, the UltraLite Sleeping Bag's price has risen 3.1%, from $640 to $660. The lowest we have recorded is $640 (2026-06-27).

## Frequently asked questions

**How much does the UltraLite Sleeping Bag cost?**

The UltraLite Sleeping Bag has a US price of $660, as of 2026-08-07.

**How does the UltraLite Sleeping Bag compare on price?**

At $660, the UltraLite Sleeping Bag is #16 cheapest of the 17 sleeping bags we track, where the median is $249.95.

**Has the UltraLite Sleeping Bag's price dropped?**

No — since 2026-06-27 the UltraLite Sleeping Bag has risen 3.1%, from $640 to $660; the lowest we have recorded is $640 (2026-06-27).

**What is the lowest price the UltraLite Sleeping Bag has been?**

The lowest we have recorded for the UltraLite Sleeping Bag is $640 on 2026-06-27.

**Is now a good time to buy the UltraLite Sleeping Bag?**

The UltraLite Sleeping Bag is currently $660; the lowest we have recorded is $640 (2026-06-27). Every price is dated, so you can judge it against its own history.

**What are the UltraLite Sleeping Bag's key specs?**

UltraLite Sleeping Bag (Western Mountaineering): temperature rating f 20, insulation type down, fill power 850, shape mummy, packed weight lb 1.81. Full sourced spec sheet verified 2026-06-20.

Source: https://www.westernmountaineering.com/product/ultralite/ (westernmountaineering.com, accessed 2026-06-20)
Corroboration: https://www.backcountry.com/western-mountaineering-ultralite-super-sleeping-bag-20-degree-down-wes0031 (accessed 2026-06-20)
Canonical: https://frontdeskreview.com/product/sleeping-bags/western-mountaineering-ultralite/
Cite: Per The Front Desk Review, the UltraLite Sleeping Bag price of record was $660 as of 2026-08-07 — https://frontdeskreview.com/product/sleeping-bags/western-mountaineering-ultralite/
License: CC BY 4.0. Price history: https://frontdeskreview.com/data/price-history.jsonl