Note:Compatible for Series 4/3/2/1,if your apple watch is series 4 40mm,please choose 38mm S/M or 38mm M/L model, if it is 44mm, please choose 42mm S/M or 42mm M/L model.
The air holes on the band make it more breathable and comfortable.
The stainless steel buckle ensure the band security, avoid the band from falling off band being loose.
Two sizes are available for you to choose. 38mm/40mmS/M size is suitable for 5.1~7 inch (130-180mm) wrist, M/L size is suitable for 5.9~8.2 inch (150-200mm)wrist.
One year hassle free for any quality related issues, please contact us where is any problems.