Shirt Lock is made of flexible nylon, hook on hook material that is worn over your shirt and inside your pants about 2" below your waistline. Shirt Lock grips both the shirt and the pants, holding your shirt tails down and your pants up. Shirt Lock was developed for men and women. Whether it be for business, casual, military and police uniforms, Scouts, school, sports, or ROTC, Shirt Lock will keep you looking tailored and professional. It's a great alternative to suspenders, shirt stays, or the rubber belts. We recommend the 1.5" width for officers wearing a Duty Belt as it provides extra support. Lock it in and keep it in!