KNKG APEX Backpack Large vs Tortuga Pro Backpack 40L
The KNKG APEX Backpack Large is 40L and 1.9kg4.2lb; the Tortuga Pro Backpack 40L is 40L and 2kg4.4lb. The KNKG APEX Backpack Large is 0.1kg0.2lb lighter. The KNKG APEX Backpack Large costs $110 less. The KNKG APEX Backpack Large fits the carry-on limit of 1 of 36 major airlines and the Tortuga Pro Backpack 40L fits 14; under the seat, 0 and 0 of 26.
| Spec | KNKG APEX Backpack Large | Tortuga Pro Backpack 40L |
|---|---|---|
| Price | $240Best | $350 |
| Volume | 40L | 40L |
| Expands to | 45L | n/a |
| Weight | 1.9kg4.2lbBest | 2kg4.4lb |
| Carry-on compliance | 3% | 39%Best |
| Personal-item compliance | 0% | 0% |
| Dimensions | 45×32×28cm17.5×12.5×11in | 56×36×20cm22×14×8in |
| Laptop | 16" | 16" |
| Bottle pockets | 2 | 2 |
| Compression straps | n/a | 0 |
| Opening | Top-loading, Top opening plus an extra flat-lay opening compartment | Clamshell |
| Warranty | 25 years | Lifetime |
| Organizer | No | Yes |
| Shoe compartment | Yes | No |
| Hydration sleeve | No | No |
| Frame sheet | No | No |
| Water-resistant | No | Yes |
| Rain cover | No | No |
| MOLLE | No | No |
| Hip belt | Removable | Yes |
| Sternum strap | Removable | Yes |
| Load lifters | No | Yes |
| Shoulder strap | No | No |
| Luggage pass-through | Yes | No |
| Camera compartment | No | No |
| Bike-ready | No | No |
| Material | 1680D ballistic nylon body, ripstop nylon lining, YKK Vislon zippers, powder-coated steel hardware | ECOPAK EPX200 |
| Last checked | 2026-10 | 2026-09 |
Where their airline fit differs
| Airline | Limit | KNKG APEX Backpack Large | Tortuga Pro Backpack 40L |
|---|---|---|---|
| AirAsia | Carry-on | Too big | Fits |
| Alaska Airlines | Carry-on | Too big | Fits |
| American Airlines | Carry-on | Too big | Fits |
| British Airways | Carry-on | Too big | Fits |
| Cebu Pacific | Carry-on | Too big | Fits |
| Delta Air Lines | Carry-on | Too big | Fits |
| easyJet | Carry-on | Too big | Fits |
| Frontier Airlines | Carry-on | Too big | Fits |
| JetBlue Airways | Carry-on | Too big | Fits |
| Qantas | Carry-on | Too big | Fits |
| Southwest Airlines | Carry-on | Too big | Fits |
| Vietjet Air | Carry-on | Too big | Fits |
| WestJet | Carry-on | Too big | Fits |
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Specs come from each brand's own product page. Fit uses listed dimensions in any orientation. How we score carry-on fit.