Men's feet tend to be larger, wider and shaped differently to women's feet, so it's no surprise that there are hiking boots for men and hiking boots for women. Shape wise, women's feet are generally narrower at the heel and wider in the forefoot, plus they're also more flexible, which calls for different kinds of support.
Due to this, many women's hiking boots have a stiffer midsole than the male counterparts, as well as greater arch support. In the outsole, you can expect deeper, more aggressive lugs. This is because women are generally lighter than men and, therefore, don't plant their feet with as much weight, meaning enhanced grip is required for technical terrain.