HydraPak UltraFlask Speed 600ml

Hydrapak designed these flasks as superlight collapsible hydration alternatives to regular hard bottles. The UltraFlask is great for runners, riders and backpackers because it has a straw and SpeedFill Cap.  The drinking tube is great when holstered on a shoulder strap so you can drink directly from the flask, no need to fiddle around with removing and re-holstering them when you need a quick drink.  Bigger 600mL (20oz) capacity, 100% BPA and PVC free Made of flexible TPU with welded seams, collapses down when not in use SpeedFill Cap lets you flip and fill, great for on-the-fly refills 42mm opening for easy adding of ice cubes and hydration mixes and works with our 42mm Filtration Cap and Plug-N-Play Disconnect Cap Included straw drinking tube (cuttable and removable) makes for easy "hands free" hydration Feathery 68g for the flask with drinking tube  Risk-Free Purchase: if you're not satisfied, we'll send you a return label and exchange it for free!