Forclaz Trek MT900 5°C Down vs Zpacks Zip Around Sleeping Bag 20°F
Weight and specs compared for 2026 — and which one to choose.
700 fill power RDS down mummy-style sleeping bag with 90% duck down. Ideal for 3-season trekking with anatomical hood and adjustable footbox. 5°C comfort rating...
Full details →900-fill down sleeping bag with full-length side zipper for easy entry and temperature regulation. Rated to -7°C, excellent for thru-hikers seeking packable, ve...
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Forclaz Trek MT900 5°C Down vs Zpacks Zip Around Sleeping Bag 20°F: which should you buy?
If saving weight is your priority, the Zpacks Zip Around Sleeping Bag 20°F wins — at 612 g it is 218 g (26%) lighter than the Forclaz Trek MT900 5°C Down (830 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.