This is my favorite brand of athletic footwear and I wear mine for all my Zumba® classes. Affordable,durable, and also very stylish! Here is an extract from their website explaining the science behind their footwear and the reason they cater exclusively for women's athletic needs.
"The science Ryka knows that a woman’s foot shape, muscle movement and skeletal structure are all inherently different from a man’s. The "Q- angle”(quadricep angle) – the anatomical relationship between the hip and knee – measures 5–7 degrees greater for women than men. As a result, women tend to shift more weight to the outside of their feet which leads to over-pronation, instability at foot strike and higher risk of injury. All Ryka sneakers, including Ryka walking shoes, are designed and developed taking into account a woman’s unique fit needs."