The silicone Apple Nike Sport watch strap is made of high-quality fluoroelastomer. Are you looking for a watch strap to wear during exercise? 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 strap fits on Apple Watch 44 mm, suitable for a wrist of 140 - 210 mm. This is an original Apple accessory.