Features Strap Colour Blue & White Strap Material Fabric (Polyester) Buckle Colour Black & Rose Gold Buckle Material Stainless steel Strap Width 20mm  NATO Vegan watch straps (or simply "NATO Straps") are watch straps originally developed by the British Ministry of Defense for wartime usage. The British navy may have pioneered the NATO strap back in the 70s, but it has come a long way since.  The durability of the strap prevents moisture from wicking away on the skin, as well as keeping the watch on the wrist of the wearer even if the one of the spring bars of the wristwatch were to pop out. NATO straps are also used amongst deep sea divers and water-sports.