Hyperlite Mountain Gear
20-Degree Mummy Bag
Sold by the people who make it — no third-party seller in between.
Manufacturer list price (MSRP)
$650.00
Retailer prices change, so we show the manufacturer list price and link out for you to check the current price.
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Overview
Wrap up your day with the 20-Degree Mummy Bag, sewn up to perfection for exceptional warmth, compressibility, and comfort without unnecessary bulk. Premium 1000 fill power grey goose down treated with a DWR finish provides maximum loft and reliable insulation, while 3-dimensional baffles allow the bag to fully loft to 2. 75 inches for efficient heat retention.
Specs
- Brand
- Hyperlite Mountain Gear
- Weight
- 800 g · 28.2 oz
- Fill
- not published by the manufacturer
- Shape
- Mummy
Weight vs. category
8% lighter than the category average.
How it measures up
Against every one of the sleeping bags & quilts in the RidgeNote register with a published figure. Manufacturer-listed; sources and dates are on this page.
- Weight
- 1.76 lb (800 g)
- Lighter than 50% of 24 weighed · #12 lightest
- -13% vs the median 2.04 lb
- Price
- $650.00
- Cheaper than 7% of 29 priced · #27 cheapest
- +79% vs the median $364.00 · $23.03/oz (median $8.20/oz)
The lightest of the sleeping bags & quilts on record is Gossamer Gear Cumulus x Gossamer Gear Aerial 330 Sleeping Bag at 11.6 oz — 471 g less and $251.00 less.
The cheapest is Sea to Summit Boab Synthetic Sleeping Bag at $124.00 — $526.00 less and 510 g heavier.
RidgeNote verdict
Similar — lighter or cheaper
Related reading
What Is the Lightest 20 Degree Sleeping Bag in 2026
See how NEMO, Kelty, and Sea to Summit 20 degree bags compare by weight, price per ounce, and rank across the current shelf for 2026.
What's the Lightest Ultralight Sleeping Bag Worth Buying in 2026?
RidgeNote ranks 24 ultralight sleeping bags and quilts by published weight, from 11.6 oz to 72.0 oz, so you know what going lighter costs in ounces.
What Is the Lightest 30 Degree Sleeping Bag in 2026?
See which 30 degree sleeping bags and quilts weigh least, ranked by grams, ounces, and price per ounce across the full shelf.
Manufacturer list price (MSRP)
$650.00