Genuine US Military ALICE first aid box. These cases were issued from the 1960's through the 1990's to certain units and users. The case measures 6"x5"x2.5" and has two Lift The Dot fasteners to close the flap and two ALICE belt keepers on the back. Inside is the plastic case with a removable top to hold the contents.
These are great cases not just for first aid supplies, but for holding all kinds of things that you want to keep safe and dry on your belt or pack. The plastic case protects from water damage as well as being crushed. You can keep phones or electronics in them, fishing tackle, or even build your own survival kit inside them.
Cases are used, in good condition. Shipped empty unless you also want to add contents, then they will come with an assortment of contents similar (but maybe not exactly) like the last photo with a field dressing, gauze, adhesive bandages, alcohol pads and a few more items.