Sea to Summit Ember XT 0°C Sleeping Bag vs Zpacks Zip Around Sleeping Bag
Weight and specs compared for 2026 — and which one to choose.
Ultralight 0°C rated bag with 850+ UltraDry Down insulation. Stretch-knit lining and sculpted hood for packability and comfort.
Check price Full details →900-fill-power down sleeping bag with unique side-entry zipper. Eliminates the draft collar for a cleaner, lighter design.
Check price Full details →Sea to Summit Ember XT 0°C Sleeping Bag vs Zpacks Zip Around Sleeping Bag: which should you buy?
If saving weight is your priority, the Sea to Summit Ember XT 0°C Sleeping Bag wins — at 609 g it is 3 g (0%) lighter than the Zpacks Zip Around Sleeping Bag (612 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.