I recently took this portable door lock and alarm set on a solo trip, and it instantly became my go-to security buddy. The orange lock slides into most standard door latches effortlessly, and once it's in place, the door won't budge—no matter how hard you push or pull. I tested it aggressively (yes, I body-slammed my hotel door), and it held up like a champ.

The door stop alarm is the real MVP though. That 120dB siren is NO JOKE—I accidentally triggered it while adjusting sensitivity (pro tip: start with 'low' setting) and nearly jumped out of my skin. The stainless steel plate gives it serious grip, though I did notice it slides on super smooth floors like vinyl.

What surprised me most was how these pocket-sized tools transformed sketchy hotel rooms into fortresses. That moment when you hear the lock click into place? Pure peace of mind. Though fair warning—some unusually thick doors or tight gaps might not work (learned this at a cabin with weird trim).

The battery-powered alarm does drain power quickly on high sensitivity, so pack spare 9Vs. And while the lock occasionally gets stubborn to remove (wiggle technique works wonders), I'd still trust this combo over flimsy hotel chain locks any day. For $20? Absolute game-changer for women travelers, Airbnb stays, or even home security.