Nathan Pinnacle 18oz Soft Flask

The Ultimate Soft Flask Experience: Grip-Free Comfort for the Long Haul.

Upgrade your hydration game with the Nathan Pinnacle Soft Flask Handheld 18oz. Built specifically for runners who want premium soft-flask performance in a larger capacity, this handheld features advanced ExoShot technology paired with an ultra-comfortable, grip-free mesh strap. Whether you are attacking marathon training, technical trail runs, weekend hikes, or long endurance efforts, this ergo-shaped carrier contours perfectly to your hand, allowing you to focus entirely on your stride—not your grip.

Key Features & Benefits

Premium Soft Flask Technology: Includes an 18oz / 532mL BPA-FREE NATHAN® x HydraPak soft flask equipped with a high-flow bite valve for quick, effortless sipping.

Rigid ExoSpine™ Support: Features a proprietary interior rigid spine that prevents the soft flask from collapsing into a floppy mess when half-empty, giving you a superior hand feel and structure from start to finish.

Grip-Free, Contoured Strap: The lightweight, ergonomically designed wicking mesh strap contours beautifully to your hand for a snug, breathable, and completely "no-grip" fit.

Smart Expandable Storage: Designed with a small wrap-around pocket featuring an elastic opening, perfect for securing your keys, ID, or essential nutrition gels.

Collapsible, Space-Saving Design: The unique 3D soft flask bottom optimizes fluid storage and shrinks as you hydrate, minimizing bulk and bouncing mid-run.

Removable & Easy to Clean: The soft flask slips out of the sleeve effortlessly, making refilling at aid stations and post-run cleaning a breeze.