Nathan Soft Flask with ExoSpine Hydration Flask Size:OS and trail essentials where you

and trail essentials where you can reach them

and casual family outings

or early-morning hunts

Hot days on the trail or around town

Dishwasher-safe stainless steel body with pure taste and no flavor transfer

Nathan Soft Flask with ExoSpine Hydration Flask Size:OS and trail essentials where youFor runners who need clean, reliable hydration on long efforts or race day, the Soft Flask with ExoSpine is our pick for vest based hydration setups. ExoSpine ribbing keeps the flask from collapsing as it empties, so you get consistent flow without fighting the squeeze. Rolls up tight when dry, so you're not hauling dead weight late in a run. ExoSpine ribbing prevents mid squeeze collapse, giving you consistent, easy flow even when the flask is