Big Agnes Rapide SL Insulated vs Zpacks Zip Around Sleeping Bag 20°F
Weight and specs compared for 2026 — and which one to choose.
Insulated air sleeping pad (regular) with 4.2 R-value, 3.25in thickness and quilted top baffles for stable, warm backcountry comfort.
Check price 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...
Check price Full details →HikeLoad is reader-supported. As an Amazon Associate we earn from qualifying purchases, at no extra cost to you. Learn more.
Big Agnes Rapide SL Insulated vs Zpacks Zip Around Sleeping Bag 20°F: which should you buy?
If saving weight is your priority, the Big Agnes Rapide SL Insulated wins — at 540 g it is 72 g (12%) lighter than the Zpacks Zip Around Sleeping Bag 20°F (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.