The Bertucci® Italian Rubber NATO band uses special proprietary rubber material that offers extreme comfort & durability, salt water, chemical, UV resistance, non-toxic, non-irritating. One size fits all. Fits any A-2, A-3, A-6, B-1, D-1, G-1 case type and other 22 mm lug width. Our U.S. Patented tool-less design permits band changing in seconds. 2 year warranty.