Hyperlite Mountain Gear Prism 40L vs Hyperlite Mountain Gear Southwest 40L
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 →Ultralight 40L pack in Dyneema Composite Fabric with roll-top closure, hip belt pockets, and a structured back panel for comfort on demanding trails.
Check price Full details →Hyperlite Mountain Gear Prism 40L vs Hyperlite Mountain Gear Southwest 40L: which should you buy?
If saving weight is your priority, the Hyperlite Mountain Gear Southwest 40L wins — at 796 g it is 31 g (4%) 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.