iSank Nylon Canvas Fabric Sport Edition Soft Replacement Watch Band Straps for Apple iWatch 38mm with Metal Clasp and Connector (Black & Yellow) Compatible perfectly for Apple Watch & Sport & Edition version -38mm; High Quality Custom made with Nylon band material Comes with stainless steel adapters that will slide on and off watch with ease Easily changeable replacement watch strap, Without Tracker This strap will not interfere with Apple Watch Heart Rate Sensor.Great for active sports ie. running, aerobics, skiing, and all gym activities