Nylon Apple Watch straps are woven from plastic threads. Thanks to small loops on the inside of the original Apple watch straps, the strap feels soft on your wrist. The straps are light and ventilate well. You can safely wear them during workouts or on a hot summer day. The nylon straps are water-resistant, so you can keep them on while swimming. Thanks to the Velcro closure, you can easily adjust your Apple Watch nylon strap to your wrist circumference. The straps are made by Apple, so you can be sure that they will fit on your Apple Watch.