This is a genuine issue ACU waist pack, also known as a butt pack or fanny pack from the U.S. Army. It is a handy item if you need some more storage. By being a U.S. Military issue item, you know it has been constructed to military indications and is created with high-quality solid construction and heavy-duty components. It features a quick-release buckle at the waist, a metal zipper, and a zippered compartment. 

These waist packs are used although the condition is very good, they might still show signs of moderate wear and age.

• 100% Nylon Cordura
• Water-resistant
• Adjustable compression straps
• Adjustable waist buckle
• Made in USA
• NSN: 8465-01-524-7263

It can be work on its own or can be attached to the ACU assault pack or rucksack with its adjustable MOLLE straps. Also, its adjustable buckle allows for a proper fit around a wide range of waist sizes.