SanDisk cards are serialized. Look on the back and see if it has a serial number on it. It's really tiny but it's there. If there is no serial number it's not authentic. When you buy on Amazon make sure the seller is SanDisk.
Have the Lexar been working for you then? I have a Sandisk Extreme Pro 256gb and it’s refusing to save to it. I formatted it originally thru the settings. No go. Took it out and reformatted on my MacBook in the recommended exFAT format. Still no...
@Pratzie, I have an old Think Tank Airport Helipak that has customizable compartments like @a2tomm shared above. I like it because it allows me to customize the interior for whatever I need to carry.
Think Tank has a wide range of backpack...