With the Apple Watch 44mm Silicone Watch Strap Nike Sport Royal Pulse/Black, you can wear your Apple Watch while exercising. The strap is made of fluoroelastomer, which is a durable material. The strap is strong, yet soft and flexible at the same time. The holes in the strap provide more ventilation, so your Apple Watch fits your wrist comfortably during exercise. Thanks to the pin closure, the end of the wrist strap doesn't protrude. This watch strap is suitable for the Apple Watch 44mm, which fits a wrist with a circumference between 30 and 200mm. This is an original Apple accessory.