The silicone Apple Nike Sport watch strap is made of high-quality fluoroelastomer. Are you looking for a watch strap to wear while exercising? Then this band is a good choice. The holes in the silicone band ensure ventilation. Ideal for exercising. The flexible material fits nicely around your wrist and feels pleasant on your skin. You close the strap with the pin clasp. This original Apple watchstrap is suitable for Apple Watch 42 mm and 44 mm and fits around a wrist of 140 to 210 mm.