SOFT FLASKS

Whether you are running a 5K or pushing through the last miles of an ultra marathon, proper hydration and nutrition is essential for high performance on roads and trails. Our versatile line of soft flasks are here to help you go further.

Hydrapak Ultraflask Speed Soft Flask

Built for endurance, the UltraFlask Speed 600ml is the largest option in our ultra-light lineup—offering more capacity to keep you going longer. The soft, flexible design ensures a secure fit in most vest pockets and collapses as you drink to reduce water sloshing. It’s topped with our latest SpeedFill™ cap, making quick refills at aid stations fast and effortless.

Features:

• 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 a narrow 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.
• Made of ultra-durable, abrasion resistant TPU & RF welded seams for superior durability and elasticity
• 100% BPA & PVC free, wide working temperature range (can be frozen - max temp 60° C / 140° F)

Specifications:

• Capacity: 600 ml / 20 fl oz
• Weight: 46 g / 1.6 oz
• Dimensions: 186mm x 81 mm / 7.3 x 3.2 in
• Filtration: 42mm Filter Cap Compatible
• Material: TPU, PP/POM, Silicone
• Best Use: Running, Hiking, Biking, Fitness, Nutrition 

Beyond Lifetime Guarantee

We go above and beyond with every product we make, our warranty is no different. If you experience any failures due to the product's manufacturing or materials, we'll repair or replace the item for free - for life. Whatever it takes for you to keep the adventure going.