Skin abrasion or chafing is a common problem for people who run for long periods of time. A large bulky watch and a chest strap can rub the skin until the surface opens up and becomes an uncomfortable mess. Women who wear a men’s heart rate monitor are sure to experience this doubly uncomfortable combination. NuMetrex is the best heart rate monitor solution for women who are looking for comfort and accuracy. The comfortable sports bra eliminates the need for an abrasive chest strap. When paired with a slim fitting women’s watch model wrist rub goes away as well! Happy Running!!