Sister of Escape

To improve your performance

Batteries: AAA

Any unused balance will expire automatically after this period and cannot be redeemed

and a 40mm rim depth

train red fyer muscle oxygen sensor albaoptics Sister of EscapeFREE DELIVERY IN EUROPE Delivery in 3 5 days (EU) The FYER is the smallest and most innovative wearable muscle oxygen sensor in the world. To improve your performance, you invest time and energy in equipment, standardized training programs, supplements, etc., but often we forget the one thing that drives our performance: our muscles. Our FYER muscle oxygen sensor comes with: the Train. Red FYER, a charging cable, one Patch Pack (20 patches), and one