HydraPak SkyFlask Speed 500ml - Handheld Running Soft Flask

When you’re racing against the clock or trying to keep your momentum on a high-intensity interval session, every second spent fumbling with a bottle cap is a second wasted. The SkyFlask Speed 500ml is the upgraded evolution of the handheld soft flask, designed specifically for runners who prioritize efficiency. The defining feature is the SpeedFill™ cap—a flip-top design that allows for lightning-fast refills at aid stations or trailside taps without the need to unscrew the lid. Combined with an adjustable hand strap that lets you maintain a relaxed, "hand-free" grip, this flask eliminates hand fatigue and sloshing as it collapses. It’s the ultimate race-day companion for Maritime runners who want their hydration to be as fast as their turnover.

• SpeedFill™ Cap: A secure flip-top lid that allows for rapid refilling at aid stations without removing the cap, getting you back on the trail in seconds.
• Adjustable Hand Strap: The soft, cinching strap provides a tailored fit for any hand size, allowing for a completely relaxed grip even during high-cadence efforts.
• Collapsible Design: The soft TPU material shrinks as you drink, eliminating water movement and sloshing while allowing the flask to be easily stashed when empty.
• High-Flow Bite Valve: Features a self-sealing, leak-proof valve that delivers a steady stream of hydration exactly when you need it.
• Wide 42mm Opening: A large diameter neck makes it easy to add ice cubes or scoop electrolyte powders without the mess.
• Ultra-Durable TPU: Built with abrasion-resistant TPU and RF-welded seams for maximum elasticity and long-term durability on the road or trail.

Best For

• The Effort: Trail racing, ultramarathon aid station transitions, and high-intensity tempo runs.
• The Goal: Minimalist, handheld hydration with the fastest possible refill times.
• The Conditions: Race days, hot and humid training sessions, and fast-paced road loops.

Technical Specifications

• Capacity: 500 ml / 17 fl oz
• Weight: 57 g / 2.0 oz
• Dimensions: 200 mm x 80 mm / 7.8 in x 3.1 in
• Cap Type: SpeedFill™ Flip-Top with Bite Valve
• Material: 100% BPA & PVC Free TPU