The nylon pass-through strap is a unifying symbol for watch lovers around the world. Whether you’re collecting Seikos or Submariners chances are you own a few nylon straps. Not only do they provide a cool contrast to a steel or leather strap, but they’re also incredibly functional. If you own a durable 10ATM watch the last thing you want is to lose it because of a faulty spring-bar. Even the strongest steel bracelet is only as reliable as the removable spring-bars it’s attached to - if one breaks, your watch is going straight to the ocean floor. The nylon pass-through strap solves this problem. Includes 20mm spring bars and spring bar tool.  The origins of this fail-safe design can be traced back over 40 years to the early 1970s when it was issued as an optional accessory by the British Ministry of Defence. The design of these early military straps is nearly identical to our version. Both are nylon, 20mm in width, and feature a second shorter piece of nylon attached to the buckle. The only key difference is that while the British originals used brass buckles and keepers our hardware is made of brushed 316L stainless steel. Interestingly, the military straps were also highly customized.  While initially issued only in grey, it wasn’t long before British regiments started customizing the straps to match their regimental colors.While we didn’t invent this unique band design, for the price, our version is one of the very best of its kind on the market.We selected a very dense Nylon weave that is sturdy, while still being supple enough to be comfortable when worn around the wrist. The band features 13 laser-cut holes, spaced 5mm apart and spanning a range between 155mm and 215mm. The end of the band is rounded to a circle, and burnished by heat not to split or fray. Attached to the Nylon band, are four pieces of brushed stainless steel hardware - one buckle and three rectangular loops. The hardware is secured by 1mm machine-stitched nylon threading, made to match the color of the band, and stress-tested to withstand up to 350 pounds of direct tension.All together these numerous design features combine into a damn solid strap. Adding in the ocean functionality, easy interchangeability, and opportunity for customization - it's a perfect match for just about any watch.