I cna't figure out the best way to add hydration? Does not fit with my camel back bladders- not sure where how to add it

Tech Specs:

Material:

Velocity (nylon, 420D), nylon (210D, dobby), recycled polyester (600D) 

Support/Suspension:

Actiwind 

Waist-Belt:

yes 

Hydration Compatible:

yes 

Reservoir Included:

no 

Rain Cover:

yes, removable 

Access:

top, front 

Pockets:

[external] 2 side water bottle, 1 front, 1 hip-belt 

Snowboard Carry:

no 

Ski Carry:

no 

Climbing Gear Loops:

0 

Ice Axe Loops:

2 

Shovel Pocket:

no 

Weight:

2 lb 15 oz 

Volume:

2440 cu in 

Recommended Use:

alpine trekking