The new and improved WearLink+ features a smart fabric sensor strap that adapts to your body for additional comfort, a user replaceable battery and coded transmission to eliminate cross talk from other heart rate monitors.

Additional new features:

Antibacterial fabric
Easy-to-use side opening hook
Front transmitter connection

XS-S fits chest sizes 21" - 38"

Available in sizes:

XS- S (21" - 38")
M-XXL (27" - 60")