Knack Series 2 Small Expandable Pack vs Monos Gesso Backpack
The Knack Series 2 Small Expandable Pack is 17L and 1.08kg2.4lb; the Monos Gesso Backpack is 16.8L and 1.13kg2.5lb. The Knack Series 2 Small Expandable Pack is 0.05kg0.1lb lighter. The Monos Gesso Backpack costs $65 less. The Knack Series 2 Small Expandable Pack fits the carry-on limit of 36 of 36 major airlines and the Monos Gesso Backpack fits 36; under the seat, 7 and 9 of 26.
| Spec | Knack Series 2 Small Expandable Pack | Monos Gesso Backpack |
|---|---|---|
| Price | $225 | $160Best |
| Volume | 17L | 16.8L |
| Expands to | 27L | n/a |
| Weight | 1.08kg2.4lbBest | 1.13kg2.5lb |
| Carry-on compliance | 100% | 100% |
| Personal-item compliance | 27% | 35%Best |
| Dimensions | 43.2×31.8×12.7cm17×12.5×5in | 42.9×29×16cm17×11.5×6.5in |
| Laptop | 16"Best | 14" |
| Bottle pockets | 1 | n/a |
| Opening | Clamshell, top-access laptop pocket, suitcase-style lid on packing compartment | 2-way zipper to the main compartment |
| Organizer | Yes | No |
| Shoe compartment | No | No |
| Hydration sleeve | No | No |
| Frame sheet | No | No |
| Water-resistant | Yes | No |
| Rain cover | No | No |
| MOLLE | No | No |
| Hip belt | No | No |
| Sternum strap | No | No |
| Load lifters | No | No |
| Shoulder strap | No | No |
| Luggage pass-through | Yes | Yes |
| Camera compartment | No | No |
| Bike-ready | No | No |
| Material | 420D high-density nylon with PU coating, 840D ballistic nylon bottom | 24 oz 100% cotton canvas |
| Last checked | 2026-09 | 2026-09 |
Where their airline fit differs
| Airline | Limit | Knack Series 2 Small Expandable Pack | Monos Gesso Backpack |
|---|---|---|---|
| Air Canada | Personal item | Too big | Fits |
| JetBlue Airways | Personal item | 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.