HydraPak Flux 1,5L foldable water bag grey

Meet the HydraPak Flux 1.5L collapsible water bottle, your ultimate space-saving hydration companion. Its flexible TPU walls roll up to a fraction of full size when empty, freeing precious pack space on any adventure. The 42mm threaded neck pairs directly with popular filters like the Katadyn BeFree, turning it into a lightweight backcountry filtration system. When full, the bottle stands upright for easy filling and drinking; when empty, it collapses and stows away effortlessly.

Advantages

The Flux Bottle combines rugged durability with thoughtful portability. Abrasion-resistant TPU with RF-welded seams ensures leak-proof reliability, while the twist cap with high-flow nozzle delivers a satisfying drink. A flexible bail handle allows easy carrying or clipping to a backpack. Top-rack dishwasher safe and freezable, it handles daily use and extreme conditions. BPA and PVC free, it's safe for you and the planet.

Suitable for

• Hiking and backpacking where pack space is at a premium
• Trail running and fastpacking thanks to its lightweight, collapsible design
• Travel and everyday hydration, fitting easily into a carry-on or daypack
• Backcountry water filtration setups with its 42mm filter-compatible neck

Key specifications

• Capacity: 1.5 liters (50 fl oz)
• Material: Thermoplastic Polyurethane (TPU) with HDPE cap
• Colour: Mammoth Grey
• BPA and PVC free
• Top-rack dishwasher safe; freezable; max liquid temperature 60°C (140°F)
• Collapsible design rolls up small when empty; stands upright when full
• Twist cap with high-flow nozzle; flexible bail handle
• 42mm threaded neck compatible with Katadyn BeFree and other filters

Recommendations

For adventurers who demand both performance and packability, the HydraPak Flux 1.5L is the smart choice. Whether you're filtering water on a thru-hike or staying hydrated on a city commute, this bottle adapts to your needs and disappears when not in use.