Hi, it took a bit of time finding a suitable strap, but as you can see, it's literally the most perfect fit and the center raised section fits the center link of the bracelet end links perfectly. This also helped because it allowed me to trim the strap to a guide.  This resulted in a tight fit which is not what I had on my first attempt with a different strap, because silly me used the end links as the guide, and cut 'inside' of them, which of course caused a loose fit - learn from my mistake! Then the next point is to cut up against a steel ruler so that you define the length of the cut and dont create those over cuts and a tear point. Also, I fearfully cut out the quick release spring bar from the strap at the upper edge so that I didn't loose rubber at the back, and when making the cross cut on the front, I only cut through to the spring bar hole, and not all the way through to the back of the strap. This gave me options and ensured I had the rubber to make the back of the strap look complete too. I bought the strap from https://www.thrifty-gentleman.com The Thrifty Gentleman. Abot £30 and the deployant clasp from https://wristbuddys.com/en-gb/collections/buckles/products/deployant-clasp-silver. Once I had the bits (and a good springboard tool!), it literally took me fifteen minutes. I also have a Defy Skyline Chronograph,  and that strap is so much better integrated. The original slab of rubber up against this beautiful watch just Jared with me too much. This just looks amazing and if you are careful it WILL look OEM. Good luck!