I have the original Nike Sport Band For Apple Watch 42mm / 44mm.
It is the Pure Platinum/Black model.
https://www.apple.com/hk/shop/product/MTMQ2FE/A/40mm-pure-platinum-black-nike-sport-band-s-m-m-l?fnode=e7a7bce15c19960fc52182d3ef97db767934a730c0a8d74d76d4027c27a8dd899fc48f80f9d50bda7b8eb41409c84d6bbf3ffa3766d869d5414c25f4b2dc7e498bf2e11f1fdc348bf6e536ff48a223c6
I only wore it 2 times. It is in good condition.
Can trade at TST, MK or Olympian Station MTR.