Feathered Friends Flicker UL 20 vs Sea to Summit Spark SP III

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

Sea to Summit Spark SP III is the lighter option — 5 g lighter than the Feathered Friends Flicker UL 20 (1% less weight). If grams matter to you, that is the one to beat.

Spec	Feathered Friends Flicker UL 20	Sea to Summit Spark SP III
Weight	714 g · 0.714 kg · 1.57 lb	709 g · 0.709 kg · 1.56 lb
Brand	Feathered Friends	Sea to Summit
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).

Check price Full details →

Sea to Summit Spark SP III

709 g

850-fill down sleeping bag rated to 0°C / 32°F.

Full details →

Feathered Friends Flicker UL 20 vs Sea to Summit Spark SP III: which should you buy?

If saving weight is your priority, the Sea to Summit Spark SP III wins — at 709 g it is 5 g (1%) 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

Feathered Friends Flicker UL 20 vs Sea to Summit Aeros Ultralight Pillow (Regular) Feathered Friends Flicker UL 20 vs NEMO Equipment Tensor Elite Sleeping Pad Feathered Friends Flicker UL 20 vs Therm-a-Rest NeoAir UberLite Feathered Friends Flicker UL 20 vs NEMO Tensor Elite Ultralight Insulated Feathered Friends Flicker UL 20 vs Zpacks Solo Quilt 20F Feathered Friends Flicker UL 20 vs Nemo Tensor Ultralight