Outdoor Vitals Carbon Evo 50 Backpack vs Outdoor Vitals CS40 Ultra
Weight and specs compared for 2026 — and which one to choose.
Mid-sized pack with UltraStretch mesh front pocket and full suspension frame under 2 lbs.
Ultralight 40L backpack built for ultralight hiking and thru-hiking. Features innovative weight-saving construction that carries 20x its weight.
Building a pack? Add either one to your HikeLoad list, or drop its weight into the base weight calculator, and see what it does to your total weight.
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Outdoor Vitals Carbon Evo 50 Backpack vs Outdoor Vitals CS40 Ultra: which should you buy?
If saving weight is your priority, the Outdoor Vitals CS40 Ultra wins — at 765 g it is 85 g (10%) lighter than the Outdoor Vitals Carbon Evo 50 Backpack (850 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.