If you need a new elastic strap for your Polar T31, T31C, T61 transmitter, ours are available in various sizes, easy to put together, and comfortable to wear.
Available in sizes Small, Medium, Large.
Medium is the size that is supplied with the product.
Small: 280 – 460 mm
Medium: 315 – 550 mm
Large: 380 – 670 mm
Length of the T31/T31C transmitter unit is 300 mm