The Nathan Sports Pinnacle Soft Flask Insulated Handheld 18 oz is designed for runners who want efficient hydration with lightweight comfort and easy storage. Built with advanced ExoDraw soft flask technology, the insulated bottle keeps fluids cooler longer while maintaining a flexible design that collapses as you drink. The proprietary ExoSpine interior structure provides stability and support, giving the handheld a balanced and secure feel during movement. An ergonomic grip free hand strap made with breathable wicking mesh contours naturally to your hand for effortless carrying on long runs or training sessions. A small expandable wrap around pocket offers quick storage for keys gels or other small essentials, making this handheld ideal for marathons trail runs hikes and everyday training.