“What is the band made out of? I'm highly allergic to plastic and latex.”
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Below is a link to the user manual for the M400 found on Polar's website. Please proceed to pages 89 & 90 for a list of materials that make up the M400 watch and heart rate sensor - Mike@PolarUSA http://support.polar.com/e_manuals/M400/Polar_M400_user_manual_English/manual.pdf
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