I bought a concrete sport band, if I remember correctly the seller said it came with the watch. See photos. The box has no picture on the front, but says concrete on back. Okay. I bought a pair of bands together on eBay so I now have a second concrete but the tone is darker, a touch more tan if you really analyze it. I’m thinking it’s just manufacturing runs, concrete wasn’t made for long.. but I’m thinking knock-offs are not exactly identical in every way other than a slight tone shift, right? I used to work with yarns, threads etc and know about dye lot differences so that’s what I’m thinking. I’m curious about the box with the blank front.. I’m curious if anyone else has noticed subtle color shifts in the same color on any sport bands? My first set that came in the box is in the middle, lighter than the second band just received but with darker stamp inside Just curious!