Adjustable strap: heart rate monitor strap with adjustable belt designed, it can extend from 25-37.4 inch, please check you needed size before you purchase.<br /> Simple strap: this black strap has good elasticity and adjustable length, soft and comfortable to wear, easy to clean and won&#39;t corrode, very useful strap for outdoor exercise.<br /> Material: the part of the strap mainly adopts soft fabric and is adjustable to your size, button style fasteners design, which provides the comfort and security needed when exercising.<br /> Soft strap: package includes 2 packs black heart rate chest straps, convenient for your to replace the old one, great for sports and activities where a wrist unit would be difficult to use.<br /> Compatible with: heart rate chest strap compatible with Polar, Garmin, Suunto and more brand, Please note: this is a compatible spare part and the manufacturers&#39; names and part numbers have been mentioned above for reference purposes only.<br /> Package includes:<br /> <br /> 2 x Heart rate monitor chest replacement strap<br /> <br /> 2 Pack heart rate monitor chest strap replacement compatible with polar and garmin transmitters soft strap<br /> <br /> Practical strap:<br /> <br /> Fabric material, comfortable to wear, adjustable length from 25-37.4 inch, button style fasteners design, which provides the comfort and security needed when exercising.