The US Department of Defense has put into effect an option under an existing contract with Wellco Enterprises Inc for a maximum of $17.4 million worth of boots for the Army and Air Force.

In a statement on Monday, Waynesville, NC-based Wellco Enterprises pointed out that this is an "indefinite quantity contract, and the amount announced by the Department of Defense is the maximum that can be ordered under the option."

The one-year option is for a minimum of 41,000 pairs ($2.8 million) and a maximum of 256,000 pairs ($17.4 million).

Simultaneous with the option exercise, Wellco said it received an order for the minimum 41,000 pairs.

"Any orders beyond this minimum will be issued at the unilateral decision of the Department of Defense," the company said.