Does the suspension zip away or is it covered by the rain cover? Can this bag be safely checked on a flight as such?

Tech Specs:

Material:

[Main] 420D HT Helix Ripstop Nylon, 210D HT Helix Double Box; [Bottom] 500D Cordura; [Liner] 70D Parachute Ripstop Nylon 

Volume:

5400cu in [Total]; 1200cu in [Daypack] 

Back Panel:

Air Mesh 

Hydration Compatible:

Yes 

Torso Adjustment:

Yes (19-23in) 

Detachable Pack:

Yes 

Sleeping Bag Compartment:

Yes 

Rain Cover:

Yes 

Access Types:

Panel loading 

Gear Loops:

Yes 

External Pockets:

4 side, 2 front 

Snowboard Carry:

No 

Ski Carry:

No 

Recommended Use:

Travel, vacations, backpacking 

Weight:

5lbs 10oz 

Warranty:

Lifetime