Hyperlite Mountain Gear Southwest 40 vs Zpacks Nero Classic 40L
Weight and specs compared for 2026 — and which one to choose.
Bombproof DCF frameless backpack built for off-trail travel. 40L capacity with roll-top closure and durable Dyneema fabric for all-weather adventures.
Check price Full details →Frameless ultralight pack in 30L or 40L, built from Dyneema CF fabric. One of the lightest load-carrying packs available for thru-hiking.
Check price Full details →Hyperlite Mountain Gear Southwest 40 vs Zpacks Nero Classic 40L: which should you buy?
If saving weight is your priority, the Zpacks Nero Classic 40L wins — at 289 g it is 508 g (64%) lighter than the Hyperlite Mountain Gear Southwest 40 (797 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 backpack page, or browse the full gear weight database.