They are quite thin but do the job. I would STRONGLY suggest using these with another storage case - I have one that holds 6 cards - so it's no big deal. I've found that most of them stay closed even after being dropped 2 feet onto the countertop. There are a few in the package that will not be. I think you get what you pay for. I also note that unlike some cases, the card isn't hung from the bottom of the case, but lies flat on it. Remember that.
5-in-1 USB Camera Connection Kit with SD TF Card Reader, 3.5mm Headphone Jack, and Charging Adapter for iOS 14 Devices - Compatible with iPhone 12 Pro and iPad - SD Card Reader USB Camera Adapter with OTG Functionality
11 Review
πΎ ZIYUETEK Aluminum USB 3.0 Micro SD Card Reader for PC - Portable Memory Card Adapter with TF Card Reader
12 Review
High-Speed Transcend TS-RDF5K USB 3.1 Card Reader for SDHC/SDXC/microSDHC/SDXC Cards - Black
11 Review
IDENTIV USB Smartfold Type C SCR3500C
11 Review
Renewed Logitech G PRO X Wireless Lightspeed Gaming Headset with Blue VO!CE Mic Filter for Immersive Gaming Experience
122 Review
Apple AirPods Pro MagSafe RU Wireless Headphones, White
159 Review
Logitech HD Webcam C270: Crisp 720p Widescreen Video Calling & Recording (960-000694), Lightweight and Portable at 3.15 lb.
192 Review
Enhance Your Visual Experience with Logitech C260 Webcam
78 Review