Feathered Friends Flicker UL 20 vs Therm-a-Rest Vesper 900
Weight and specs compared for 2026 — and which one to choose.
Hoodless 20F quilt/bag hybrid with 950+ fill down, full-length zip and cinchable footbox; 10D shell (regular).
Check price Full details →Ultralight sleeping bag with 900 fill-power hydrophobic goose down. 360g of down fill. Excellent warmth-to-weight ratio for three-season backpacking trips.
Check price Full details →Feathered Friends Flicker UL 20 vs Therm-a-Rest Vesper 900: which should you buy?
If saving weight is your priority, the Therm-a-Rest Vesper 900 wins — at 550 g it is 164 g (23%) lighter than the Feathered Friends Flicker UL 20 (714 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.