The Whirlwind's low-profile, hydration port and speed-friendly design make it ideal for aerobic backcountry outings when an extra layer and extra food are critical.
Features:
Weight: 2 lb 2 ozs / 964 g
Main Material: 70d Nylon Taffeta RS
Main Material: 210d Nylon Baby Rip
Volume: 900 cu in / 15 litres
Airflowâ„¢ Frame System Airflow Frame System
Hydration Pocket and Port Designed to Hold Hydration Pouch Systems