UltraFlask™ Speed 500ml

VEST PACK FIT: Soft material conforms to most hydration vests , belts or pack pockets , makes a great addition or replacement running flask., COMPRESSIBLE: Flexible design shrinks as you drink , reducing water movement., SPEEDFILL CAP: Designed for fast filling – flips open for quick refills and snaps closed for a leak-proof seal., CUSTOMIZABLE CAP: Choose between two cap options. Directly mount your bite valve onto the cap or insert the adjustable drink tube to create a straw cap (can be cut to any length)., HIGH-FLOW: Easy to drink bite valve auto-seals after each sip , eliminating annoying drips., WIDE OR NARROW FLASK: 500ml flask features an arrow flange for skinny and longer vest pockets. For wider pockets , the 600ml flask features a wide flange for a better fit., LARGE OPENING: 42mm opening lets you fill the flask easily with ice and drink mixes., MATERIAL: TPU, PP/POM, Silicone, CAPACITY: 500 ml / 17 fl oz, ACTIVITIES: Running