All our raw materials are medical grade and biocompatible, therefore, not harmful to human skin. 


The Ava device as a whole, including the color pigments and coating, passed the Cytotoxicity test, meaning the materials used are not toxic in any way.


  • Ava's Sensor Housing: Medical grade plastic with color coating
  • Strap: Medical grade TPE with color pigments
  • Buckle: Surgical grade stainless steel with color coating 
  • Screws: Surgical grade stainless steel**
  • Electrodes (metal circular pads on the underside of the pod): Surgical grade stainless steel**

**Surgical grade stainless steel contains 10-15% nickel


Ava is BPA- and PVC-free.