<b>Specification</b><br> Color: 12 colors<br> Material : Silicone<br> Available size: <br> <b>38mm/40mm</b><br> S is suitable for wrist sizes 5.78--6.18 in (147mm--157mm);<br> M is suitable for wrist sizes 6.41--6.81 in (163mm--173mm);<br> L is suitable for wrist sizes 6.96--7.32 in ( 177mm--186mm);<br> <b>42mm/44mm</b><br> S is suitable for wrist sizes 6.33--6.73 in (161mm--171mm);<br> M is suitable for wrist sizes 7.04--7.40 in (179mm--188mm);<br> L is suitable for wrist sizes 7.67--8.07 in (195mm--205mm);<br> <b>If the size you measure is in the middle of the two size ranges, please choose the smaller of the two size ranges.</b><br><br> <b>Compatible Models</b><br> --Apple Watch SE<br> --Apple Watch Series 7<br> --Apple Watch Series 6<br> --Apple Watch Series 5<br> --Apple Watch Series 4<br> --Apple Watch Series 3<br> --Apple Watch Series 2<br> --Apple Watch Series 1<br> --Apple Watch Nike+<br> --Apple Watch Edition<br> --Apple Watch Sport<br><br> <b>Notes </b><br> 1.Please choose the correct size before you purchasing. <br> 2.If your wrist fits both sizes on the chart, it is recommended that you choose the smaller size. <br>