Think Tank Photo Airport Accelerator 41L

Finally found a carry-on backpack that actually fits under the seat with my full kit inside — the separate laptop compartment is a lifesaver for quick TSA access.

Took this as my personal item on a week-long trip and it swallowed my gear without a single gate check. The 41L size is genuinely the sweet spot — big enough for real kit, still fits the overhead on a regional jet.

Squeezed two camera bodies, four lenses, and a laptop into this thing and it still slid into the overhead bin on a regional jet without a fight. The 41L really is the sweet spot if you want max gear and still board with carry-on only. Zippers feel beefy enough to survive years of TSA.