The Tempdrop sensor is made from medical-grade ABS plastic and stainless steel*.
Armbands are composed of Polyester, spandex, nylon and silicon.
We encourage customers to upgrade to the twelve-month refund satisfaction guarantee (VIP package) if they have concerns about skin sensitivity.
*Stainless steel contains trace amounts of nickel. The small metal stud can be covered with thin medical tape without disruption to readings.