MiLTAT 21mm G10 NATO Watch Strap Extra Thick - Grey Black strips, Polished Buckle Shipping Estimate : 7 - 10 Business Days within US. Material : Ballistic nylon 1.5mm (standard nato is 1.0mm) Wrist size : Approximately 150mm (6 inch) to 230mm (9inch) Color / Hardware : Grey & Black Strips / Polished Design to fit : All watches with 21mm lug width