Antler Icon 2-in-1 Tote Backpack vs Tom Bihn Synapse 19
The Antler Icon 2-in-1 Tote Backpack is 18.6L and 0.72kg1.6lb; the Tom Bihn Synapse 19 is 19L and 0.7kg1.5lb. The Tom Bihn Synapse 19 is 0.02kg0lb lighter. The Antler Icon 2-in-1 Tote Backpack costs $60 less. The Antler Icon 2-in-1 Tote Backpack fits the carry-on limit of 20 of 36 major airlines and the Tom Bihn Synapse 19 fits 36; under the seat, 0 and 8 of 26.
| Spec | Antler Icon 2-in-1 Tote Backpack | Tom Bihn Synapse 19 |
|---|---|---|
| Price | $195Best | $255 |
| Volume | 18.6L | 19L |
| Weight | 0.72kg1.6lb | 0.7kg1.5lbBest |
| Carry-on compliance | 56% | 100%Best |
| Personal-item compliance | 0% | 31%Best |
| Dimensions | 37×40×14cm14.5×15.5×5.5in | 41×29×20cm16×11.5×8in |
| Laptop | 14"Best | 13" |
| Compartments | n/a | 6 |
| Bottle pockets | 1 | 1 |
| Compression straps | n/a | 0 |
| Opening | Top-loading, Secure zip-top closure | Panel access, half-zip |
| Warranty | Lifetime | Lifetime |
| Organizer | No | No |
| Shoe compartment | No | No |
| Hydration sleeve | No | No |
| Frame sheet | No | No |
| Water-resistant | Yes | Yes |
| Rain cover | No | No |
| MOLLE | No | No |
| Hip belt | No | Yes |
| Sternum strap | No | Removable |
| Load lifters | No | No |
| Shoulder strap | Yes | Yes |
| Luggage pass-through | Yes | No |
| Camera compartment | No | No |
| Material | 100% recycled polyester in a bespoke weave, water-resistant finish | 420d Spectron ripstop exterior (default), 210d Cerylon interior, closed-cell foam back panel |
| Last checked | 2026-10 | 2026-09 |
Where their airline fit differs
| Airline | Limit | Antler Icon 2-in-1 Tote Backpack | Tom Bihn Synapse 19 |
|---|---|---|---|
| Air France | Carry-on | Too big | Fits |
| AirAsia | Carry-on | Too big | Fits |
| Alaska Airlines | Carry-on | Too big | Fits |
| Allegiant Air | Personal item | Too big | Fits |
| American Airlines | Carry-on | Too big | Fits |
| American Airlines | Personal item | Too big | Fits |
| Avianca | Carry-on | Too big | Fits |
| British Airways | Personal item | Too big | Fits |
| Cebu Pacific | Carry-on | Too big | Fits |
| Delta Air Lines | Carry-on | Too big | Fits |
| easyJet | Personal item | Too big | Fits |
| Frontier Airlines | Personal item | Too big | Fits |
| Gol Linhas Aereas | Carry-on | Too big | Fits |
| IndiGo | Carry-on | Too big | Fits |
| JetBlue Airways | Carry-on | Too big | Fits |
| JetBlue Airways | Personal item | Too big | Fits |
| KLM | Carry-on | Too big | Fits |
| LATAM Airlines | Carry-on | Too big | Fits |
| LATAM Airlines | Personal item | Too big | Fits |
| Qantas | Carry-on | Too big | Fits |
| United Airlines | Carry-on | Too big | Fits |
| Vietjet Air | Carry-on | Too big | Fits |
| Volaris | Personal item | 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.