Feathered Friends Hummingbird UL 30 Sleeping Bag vs Therm-a-Rest Hyperion 20F/-6C (Regular)
Weight and specs compared for 2026 — and which one to choose.
Premium 30°F sleeping bag loaded with 900-fill goose down, ultralight mummy construction ideal for three-season alpine and trail use.
Check price Full details →Ultralight 20F down mummy bag with 900-fill Nikwax Hydrophobic Down for fast-and-light backpacking.
Check price Full details →Feathered Friends Hummingbird UL 30 Sleeping Bag vs Therm-a-Rest Hyperion 20F/-6C (Regular): which should you buy?
If saving weight is your priority, the Therm-a-Rest Hyperion 20F/-6C (Regular) wins — at 567 g it is 1 g (0%) lighter than the Feathered Friends Hummingbird UL 30 Sleeping Bag (568 g). That said, the heavier option may justify the extra grams with more capacity, durability or comfort, so weigh the trade-off against how you'll use it.
See where both rank against everything else in this category on the lightest sleep system page, or browse the full gear weight database.