Nathan Pinnacle 18oz Insulated Soft Flask

The Nathan Pinnacle 18oz Insulated Soft Flask, now available at Grivet Outdoors, is engineered for runners, hikers, and outdoor enthusiasts who demand reliable hydration without the bulk. Featuring advanced ExoSpine™ technology, this soft flask maintains its shape for a stable, ergonomic grip, while the insulated design keeps your fluids cooler for longer-even during intense workouts or hot-weather adventures. The lightweight, breathable mesh strap offers a secure, grip-free fit that minimizes hand fatigue, and an expandable pocket provides quick access to essentials like keys or energy gels. Made from BPA-free materials, the Pinnacle Soft Flask collapses as you drink, reducing sloshing and saving space in your pack. Whether you're tackling a marathon or a mountain trail, this flask delivers comfort, convenience, and performance in every sip.Features- 18oz (535 mL) capacity for ample hydration on the go- BPA-free, food-grade materials for safe, clean drinking- ExoSpine™ technology provides a stable, rigid hand feel- Double-wall insulation keeps fluids cooler for longer- Lightweight, breathable mesh strap for grip-free comfort- Expandable storage pocket for keys, gels, or small essentials- Collapsible design minimizes size and waste, supporting sustainability through durability and reusability