This is the famous seat-belt Militex that every watch nerd needs. Our Supreme Militex is the best in it's class. With it's beautiful metallic sheen, this strap speaks quality throughout. Designed with the most meticulous watch aficionado in mind. Our Supreme Militex straps are smooth to the touch and extremely comfortable to wear. Good to know: These will cover heart rate sensors on smart watches. See our smartwatch compatible version here. Features: Superior 304 stainless steel flat hardware Double pass for extra security Metallic Sheen Nylon Seat-belt durability and texture 29cm long and 1.4mm thick Waterproof Free spring bars can be added to your order for free in the pop up box. This will appear after adding this strap to cart. What's the difference between Supreme and Ultra Militex? The Ultra Militex is thinner (1.2mm thick) and has a smoother texture. The Ultra Militex's texture is more similar to a seat-belt.