UltrAspire UltraFlask 550 Hybrid Bottle

• Sits close to the body, so it moves less when full
• Soft shape feels comfortable against your chest
• Very squeezable for a quick refill of your mouth
• Large opening takes ice cubes
• Simple push/pull valve with good flow

• Valve: Push/pull nozzle, high flow
• Material: Food-grade LDPE
• Made in: USA
• Cap: Large opening, fits ice cubes
• Care: Hand wash only, not dishwasher safe
• Extra: Custom printing option available

• Runners who want soft flask comfort with a hard bottle feel
• Hot days when ice keeps fluid cool
• Vest and waist belt users wanting quick access

Less suited to: runners who want a hose to sip from. For that, look at Hydration.

We like the hybrid idea: a flask that feels soft against the body but still gives you a proper bottle valve. It fills a gap for runners who dislike the bite valve on a standard soft flask. Made in the USA, too.