Hyperlite Mountain Gear Prism 40L vs Zpacks Nero Classic 50L
Weight and specs compared for 2026 — and which one to choose.
Technical alpine pack in DCH150 Dyneema with crampon pouch, ice tool carry, and removable lid. Load capacity up to 22kg.
Check price Full details →Frameless ultralight backpack made from Dyneema Composite Fabric. Minimalist design for gram-conscious hikers and ultralight enthusiasts.
Check price Full details →Hyperlite Mountain Gear Prism 40L vs Zpacks Nero Classic 50L: which should you buy?
If saving weight is your priority, the Zpacks Nero Classic 50L wins — at 289 g it is 538 g (65%) lighter than the Hyperlite Mountain Gear Prism 40L (827 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.