Dextro Container / Box / Case

This is a box for dextro tablet packs that my dad asked me to design. Being a diabetic he needs to carry these around with him all the time and wanted a secure way of doing so without the packaging falling apart in his pocket!
Its a simple design, the lid snaps in to the end. It takes some persuasion first time but then it goes in and out easily.
Hopefully this will help out some of the diabetics who are using this platform!

Please comment your experiences with this make! Id love to hear about things you would like upgrading or changing on it. Thanks!