（38mm / 40mm）size Compatible 38mm and 40mm apple watch.

（42mm / 44mm）size Compatible 42mm and 44mm apple watch.

Fits

Apple Watch Series 4 Series5

Apple Watch Series 3

Apple Watch Series 2

Apple Watch Series 1

Apple Watch Sport 

Apple Watch NIKE  Edition

High quality material

Breathable Weaved Nylon

Made from high quality nylon material, ensure that no harm and provide soft cushioning on the skin which allow moisture to escape.It's durable, fashionable and breathes wonderfully.It is perfectly suitable for exercising.