Hyperlite Mountain Gear Flat Tarp 8'6" vs Six Moon Designs Lunar Duo

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

Hyperlite Mountain Gear Flat Tarp 8'6" is the lighter option — 595 g lighter than the Six Moon Designs Lunar Duo (70% less weight). If grams matter to you, that is the one to beat.

Spec	Hyperlite Mountain Gear Flat Tarp 8'6"	Six Moon Designs Lunar Duo
Weight	255 g · 0.255 kg · 0.56 lb	850 g · 0.850 kg · 1.87 lb
Brand	Hyperlite Mountain Gear	Six Moon Designs
Category	Shelter	Shelter

Hyperlite Mountain Gear Flat Tarp 8'6"

255 g

Minimalist Dyneema Composite Fabric square tarp (8'6"x8'6"). Extremely packable, 100% waterproof. Versatile ultralight bivy shelter for experienced campers.

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Six Moon Designs Lunar Duo

850 g

Spacious 2-person trekking pole shelter with side entry.

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Hyperlite Mountain Gear Flat Tarp 8'6" vs Six Moon Designs Lunar Duo: which should you buy?

If saving weight is your priority, the Hyperlite Mountain Gear Flat Tarp 8'6" wins — at 255 g it is 595 g (70%) lighter than the Six Moon Designs Lunar Duo (850 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 shelter page, or browse the full gear weight database.

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