I work in the security field. Although I have never been in the military I can see why bdus  are used. These pants are ultra comfortable. From casual dress to working in the woods, these pants passed my versatility test . The legs are drawstring adjustable at the ankle. They have a button fly, also have a waist adjustment. Best of all the material is rugged and tear resistant and the seat of the pants are reinforced. The best part is these pants come in big man sizes and all at a great price. A great buy for men and women. Don't miss this bargain item. I will definitely buy this again. Very durable.