Nathan Hypernight QuickStart 2.0 4 Liter (1.5 Liter) Hydration Pack

This is the ultimate minimalist hands-free hydration option for both beginners and experienced runners who can train in comfort and be seen in low light conditions.

• Unique geo-reflective print for added visibility in low-light conditions
• 1.5 liter bladder
• Front storage for nutrition and phone, fits most large format smartphones
• Front bottle pocket fits up to 22 oz. flask
• Main back zipper pocket
• Adjustable front and side straps for perfect fit
• Soft perimeter binding prevents chafing
• One size fits most
• Material: 60% nylon, 40% polyester
• Storage capacity: 4 liters
• Weight: 7.23 oz. (without bladder), 12.38 oz. (with bladder)