Cypher Climbing Mydas Ultra II vs Katadyn BeFree 1.0L
Weight and specs compared for 2026 — and which one to choose.
Ultralight carabiner at 0.85oz with 22kN rating. Wire gate design.
Full details →Flow-optimized 0.1-micron EZ-Clean hollow fiber filter integrated with 1L soft flask. Delivers 2L per minute filtration without pumping.
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Cypher Climbing Mydas Ultra II vs Katadyn BeFree 1.0L: which should you buy?
If saving weight is your priority, the Cypher Climbing Mydas Ultra II wins — at 24 g it is 33 g (58%) lighter than the Katadyn BeFree 1.0L (57 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 safety page, or browse the full gear weight database.