Hydrapak designed these flasks as superlight collapsible hydration alternatives to regular hard bottles. The SkyFlask is great for runners and bike/backpackers because it has a locking cap and an integrated handstrap. We offer them with a stubby straw silicone drinking tube so when holstered on a shoulder strap you can drink directly from the flask, no need to fiddle around with removing and re-holstering them when you need a quick drink.
- 500mL (17oz) capacity, 100% BPA and PVC free
- Made of flexible TPU with welded seams, collapses down when not in use
- Twist locking cap is a must for bike/backpacking and keeps the system leakproof
- 42mm opening for easy adding of ice cubes and hydration mixes and works with our 42mm Filtration Cap
- Included straw drinking tube (cuttable and removable) makes for easy "hands free" hydration
- Adjustable strap keeps it where you want it when your running with it in hand
- Feathery 64g 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!