HydraPak 42mm Filter Cap vs Sawyer Squeeze Filter

Weight and specs compared for 2026 — and which one to choose.

HydraPak 42mm Filter Cap is the lighter option — 28 g lighter than the Sawyer Squeeze Filter (33% less weight). If grams matter to you, that is the one to beat.

Spec	HydraPak 42mm Filter Cap	Sawyer Squeeze Filter
Weight	57 g · 0.057 kg · 0.13 lb	85 g · 0.085 kg · 0.19 lb
Brand	HydraPak	Sawyer
Category	Hygiene	Hygiene

HydraPak 42mm Filter Cap

57 g

Lightweight fast-flow filter cap that threads onto 42mm bottles, removing bacteria and cysts for hiking and travel.

Check price Full details →

Sawyer Squeeze Filter

85 g

Versatile squeeze water filter. 100,000-gallon lifetime.

Full details →

HydraPak 42mm Filter Cap vs Sawyer Squeeze Filter: which should you buy?

If saving weight is your priority, the HydraPak 42mm Filter Cap wins — at 57 g it is 28 g (33%) lighter than the Sawyer Squeeze Filter (85 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 hygiene page, or browse the full gear weight database.

More hygiene comparisons

HydraPak 42mm Filter Cap vs PackTowl UltraLite Face Towel HydraPak 42mm Filter Cap vs CNOC Vecto 3L Water Container HydraPak 42mm Filter Cap vs Sawyer Mini Water Filter HydraPak 42mm Filter Cap vs Katadyn BeFree 1L HydraPak 42mm Filter Cap vs Sea to Summit Trek and Travel Liquid Hand Wash HydraPak 42mm Filter Cap vs SteriPen Adventurer Opti