Just got back from a solo trip to Istanbul and this little red security kit was my MVP! The door lock snapped into place in seconds and didn't budge even when I tested it with some serious shoulder checks (yes, I got weird looks from housekeeping).

The alarm stopper is LOUD - like 'scare-the-crap-out-of-you' loud at 120dB. Pro tip: don't test it at 3AM unless you want angry neighbors. The sensitivity settings are clutch though - kept it on medium since my hotel door rattled in the wind.

Only gripe? The stopper wouldn't fit under super tight doors (RIP my vinyl-floored Airbnb), but the lock worked everywhere. Threw it in my crossbody bag during day trips too - total peace of mind for less space than a makeup pouch.

10/10 would recommend for solo travelers, especially women. That moment when housekeeping jiggles the handle and immediately walks away? Priceless.