Okay, so I've been using this little black case for my Checkme BP2A monitor for a few weeks now, and here's the real tea:
First off - it's SUPER travel-friendly. Like, I can literally toss it in my jacket pocket or work bag without thinking twice. The 15.5cm size is perfect for not being bulky.
The zipper feels surprisingly durable? Like one of those zippers that won't fail you after three uses. Big plus.
BUT... (there's always a but) it's a tight squeeze. Like, trying-to-close-your-overstuffed-suitcase tight. The monitor fits fine, but adding the charging cable makes it a puzzle game. The mesh pocket helps, but you'll need some patience.
Pro tip: Roll your cable instead of folding it - makes closing easier!
Wish it had just 1cm more depth for the manual, but for protection during travel? 10/10 would recommend. Just don't expect extra storage space.