Weighing in at 350 grams the octane xct is ideal for moving fast and light the waist belt provides extra stability and includes zippered pockets for easy access to essentials the new design features extra storage on the waist belt and harness so you can keep keys and gels and maps in easy reach the crux delivers 20 more water per sip with an ergonomic handle for easier refilling and an onoff lever that makes it easy to prevent leaks ventilated waist belt with cargo pockets for easy access to ess