42mm Filter Cap

Flexible bottles get an upgrade. The Flux is shaped like a hard bottle, compresses like a softflask, and cuts weight by 50%. Topped with a dust cover and twist-drink nozzle for grab-and-go hydration, plus a bail handle to keep hydration secure in your hand or on your pack. The Flux stands upright like a hard bottle but when you finish your drink, this bottle packs down to pocket size.

The great outdoors just got greater. The Seeker™ 2 L is HydraPak’s ultra-light, durable water storage bag for camping, backpacking, you name it. It collapses down to the size of a fist, easy to pour and transport. The leakproof, tethered cap is filtration compatible making it the perfect tool for the long haul.

Go big. The largest of our ultra-light series, the UltraFlask Speed 600 ml holds more so you can go the distance. Its soft material allows it to fit snugly in most vest pockets and it shrinks as you drink to minimize water movement. Topped with our newest SpeedFill™ cap feature that makes aid station refills a breeze. 

Get out and stay out. The Seeker 3 L is a durable, ultra-light hydration storage system for all your long haul excursions. A weather-resistant pour handle, and two side lash points for hanging or pack attachment make it the perfect backcountry tool. You can freeze it to use as an ice pack or keep it in your camp kit for your go-to filter bag. Adventure seekers, this one is for you.

Go the distance with our high-capacity Seeker 4 L. The flexible coated handle allows for easy pouring and carrying. It packs away nice and easy. Its streamlined shape fits in a wide variety of packs, whether strapped to the outside or inside a pack pocket. Pairing volume with performance.

Flexible bottles get an upgrade. The Flux is shaped like a hard bottle, compresses like a softflask, and cuts weight by 50%. Topped with a dust cover and twist-drink nozzle for grab-and-go hydration, plus a bail handle to keep hydration secure in your hand or on your pack. The Flux stands upright like a hard bottle but when you finish your drink, this bottle packs down to pocket size.

Flexible bottles get an upgrade. The Flux is shaped like a hard bottle, compresses like a softflask, and cuts weight by 50%. Topped with a dust cover and twist-drink nozzle for grab-and-go hydration, plus a bail handle to keep hydration secure in your hand or on your pack. The Flux stands upright like a hard bottle but when you finish your drink, this bottle packs down to pocket size.

Part of our ultra-light series, the 500 ml is so light, you might forget you brought it. Weighing in at just over an ounce, it’s optimal hydration, no matter what kind of runner you are. Its pliable material conforms to most pockets, it shrinks as you drink to minimize water movement and it can be used with or without the tube. Topped with a new feature, the SpeedFill™ cap, makes aid station refills a breeze. Ultra light weight, ultra useful.

Take matters into your own hands with the SkyFlask™ 500ml handheld. Designed for the minimalist runner, the SkyFlask is lightweight and easy to hold with an adjustable hand strap for a more precise fit. It has a twist locking cap, high-flow bite valve, and large opening for rapid refills. Your next PR awaits.

Keep your water cool and prevent bottle sweat. An insulated version of our handheld SkyFlask™ 500ml soft bottle, the SkyFlask IT 500ml features our IsoBound™ technology. Engineered to keep fluids at an ideal temperature 38% longer than a standard flask.

Keep your water cool and prevent bottle sweat. An insulated version of our handheld SkyFlask™ Speed 350ml soft bottle, the SkyFlask IT Speed 350ml features our IsoBound™ technology. Engineered to keep fluids at an ideal temperature 38% longer than a standard flask.

Take matters into your own hands with the SkyFlask™ Speed 350ml handheld. Mile after mile, the SF350 is comfortable to hold with an adjustable hand strap. Topped with our SpeedFill™ cap that makes aid station refills a breeze. Boost your performance.