An innovative, ultra-light, efficient system for fast-and-light day hikes and long treks, the PackFlask™ puts hydration right where you want it. Securely attach it to your pack harness for hands-free use. A stretch mesh pouch secures the bottle and — without the flask — carries a phone, snacks, or map. The bottle is light, designed to ride comfortably, and collapses when empty for easy packing. Its leakproof self-sealing nozzle delivers high-flow hydration, and a dust cover keeps it clean.

Features of Hydrapak PackFlask Bottle

• Easy Drinking : Made for splash-free drinking on the move with a high-flow self-sealing silicone nozzle.
• Dust Cover : Protects the nozzle from dust, mud, and dirty hands. Quickly opens and closes with a single-handed flip.
• Filter Compatible : Attach it to most 42mm threaded water filters to create a packable squeeze system.
• Light and Tough : Lighter than traditional bottles, and made of durable TPU with RF-welded seams.
• Instant Access : Stretch mesh pouch attaches to your pack harness and securely holds the bottle for hands-free hydration.
• Packable : Sized for easy integration with the pouch, the empty PackFlask™ bottle packs small — just flatten, roll, and stash it away.

Specifications : 

• Capacity: 500 ml / 17 fl oz - 750 ml / 25 fl oz 
• Weight: (500ml) 79 g / 2.8 oz - (750ml) 93 g / 3.3 oz 
• Dimensions: (500ml) 220 mm x 85 mm / 8.7 in x 3.3 in - (750ml) 228 mm x 107 mm / 9.0 in x 4.2 in 
• Filtration: 42mm Filter Cap & UltraFlask™+ Filter Cap Compatible
• Material: TPU, PP, Silicone, POM, TPE, Polyester, EVA, Nylon