The Nathan Pinnacle Soft Flask Insulated Handheld 18oz is the ultimate hydration solution for runners, trail enthusiasts, and adventurers seeking comfort and performance without the bulk.

This innovative handheld features a generous 18oz (532mL) BPA-free insulated soft flask with a high-flow bite valve, keeping your water or electrolytes cooler longer during intense runs, marathons, hikes, or climbs. Nathan's proprietary ExoSpine™ technology provides a rigid yet flexible structure for superior hand feel and easy squeezing, while the 3-D molded bottom optimizes compactness and stability.

Enjoy a grip-free experience with the lightweight, breathable, ergonomic mesh strap that contours naturally to your hand, reducing fatigue and eliminating the need to clutch. An expandable storage pocket securely holds keys, gels, cards, or small essentials—no extra belt required.

Perfect for minimalist hydration on road runs, trail adventures, ultramarathons, or everyday training. Lightweight, bounce-free, and built for comfort—stay hydrated and focused mile after mile.