Does anyone know the dimensions of the pack if you take the top off? The listed dimensions on the NF website is 24½ x 13½ x 9½ in. for the M pack and that is just a hair bigger than most airline carry-on allowances. I figured if I can take the top off and use that as my "personal item" and the bag goes below 20 in. in height I should be good to go. Thanks!

Tech Specs:

Material:

630D Oxford 

Volume:

[Small] 3350-3950cu in3 (55-65L); [Medium] 3650-4300cu in (60-70L); [Large] 3950-4600cu in (65-75L) 

Suspension:

X-Radial, E-VAP shoulder harness, E-VAP 3-point hip-belt 

Hydration Compatible:

Yes 

Torso Adjustment:

Yes 

Detachable Pack:

No 

Sleeping Bag Compartment:

No 

Rain Cover:

No, but waterproof hood 

Access Types:

Top, side 

External Pockets:

1 Lid, 2 water bottle 

Snowboard Carry:

No 

Ski Carry:

No 

Gear Loops:

2 Trekking pole 

Ice Axe Loops:

2 

Shovel Pocket:

No 

Weight:

[Medium] 4lbs 8oz (2040g) 

Recommended Use:

Backpacking 

Manufacturer Warranty:

Lifetime 

Country of Origin:

United States