- New

Hydrapak 42mm Filter Cap – a quick and easy way to filter water directly from your bottle. Compatible with Hydrapak bottles featuring a 42mm thread.
Hydrapak 42mm Filter Cap – a convenient water filtration solution that allows you to drink clean water straight from your bottle. Just screw the filter cap onto a compatible bottle and hydrate on the go – no need for extra containers or steps.
Perfect for hiking, trail running, bikepacking, travel, and emergency preparedness. Screw it on, filter, and drink – it’s that simple.