HydraPak SoftFlask Speed 500ml - Streamlined Soft Flask

Whether you’re looking for a performance upgrade or a reliable replacement for your favorite vest, the SoftFlask Speed 500ml is engineered to be the most versatile flask in your kit. While some bottles fight you when you try to slide them into a tight mesh pocket, the SoftFlask features a unique pinch-welded bottom that creates a streamlined, tapered profile—making loading and unloading a cinch even when your vest is fully packed. Equipped with the one-handed SpeedFill™ flip-top cap, you can top up your water or electrolytes at a trailside tap in seconds. It’s a simple, ultra-lightweight hydration solution that ensures you spend less time fumbling with your gear and more time enjoying the flow of the trail.

• Pinch-Welded Bottom: Creates a sleek, tapered shape that slides effortlessly into the widest range of running vest and pack pockets.
• SpeedFill™ Cap: A secure flip-top lid designed for quick, one-handed refills without the need to unscrew the cap, perfect for fast aid station transitions.
• Self-Sealing Bite Valve: The high-flow silicone valve delivers sips on demand and automatically seals to prevent annoying drips on your shirt or gear.
• Packs Down Small: The ultra-pliable TPU material allows the flask to collapse completely as you drink, eliminating sloshing and folding down to nearly nothing when empty.
• Lightweight & Durable: Weighing just grams, this flask is built from abrasion-resistant TPU with RF-welded seams for long-lasting reliability on the road or trail.

Best For

• The Effort: Daily training runs, marathon prep, and upgrading existing hydration vests.
• The Goal: Effortless loading into narrow pockets and fast, one-handed mid-run refills.
• The Conditions: Humidity-heavy coastal runs, sunny road loops, and race-day efforts.

Technical Specifications

• Capacity: 500 ml / 17 fl oz
• Weight: Ultra-lightweight (approx. 40g)
• Material: TPU, PP, Silicone, POM, 304SS
• Cap Type: SpeedFill™ Flip-Top with Bite Valve
• Sustainability: 100% BPA & PVC Free; Dishwasher safe (top rack)