OH1 Sensor Size:NO SIZE the Lynx string offers a

the Lynx string offers a vibrant feel and perfect controlGreat performing and durable polyester stringString for the aggressive player looking for a premium string with both control and touchHEAD Lynx Tennis String is an innovative string that features a co-polymer mixtureLength: 12 m/40 ft

It can be used as a back roller as well as for other parts of the body

The upper made of stretch knit prevents the socks from slipping

supportive fit

3 different resistance levels: 5

OH1 Sensor Size:NO SIZE the Lynx string offers aThis optical heart rate sensor offers an easy to use alternative to heart rate chest straps. Works with all Polar BLE devices, Polar Beat and many other fitness apps. Built in memory (4 MB, 150 200h of training time). Updatable firmware. Rechargeable battery (up to 12h of operating time).