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Feathered Friends Flicker UL 20 vs Zpacks Classic Sleeping Bag 20F

Weight and specs compared for 2026 — and which one to choose.

Zpacks Classic Sleeping Bag 20F is the lighter option — 367 g lighter than the Feathered Friends Flicker UL 20 (51% less weight). If grams matter to you, that is the one to beat.
Spec Feathered Friends Flicker UL 20 Zpacks Classic Sleeping Bag 20F
Weight 714 g · 0.714 kg · 1.57 lb 347 g · 0.347 kg · 0.77 lb
Brand Feathered Friends Zpacks
Category Sleep System Sleep System
Feathered Friends Flicker UL 20
714 g

Hoodless 20F quilt/bag hybrid with 950+ fill down, full-length zip and cinchable footbox; 10D shell (regular).

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Zpacks Classic Sleeping Bag 20F
347 g

Mummy-style sleeping bag rated to 20F (-7C) with 900-fill goose down. DCF outer shell for low weight and packability. Water-resistant treatment included.

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Feathered Friends Flicker UL 20 vs Zpacks Classic Sleeping Bag 20F: which should you buy?

If saving weight is your priority, the Zpacks Classic Sleeping Bag 20F wins — at 347 g it is 367 g (51%) 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.

More sleep system comparisons