The La Sportiva Thunder GTX Womens is all about the fit. This has been La Sportiva's mantra throughout the development of this women's lightweight backpacking and hiking boot. Slip it on and feel the support over the top of your foot and in the heel. Enjoy the lightweight running shoe feel of the Trailon midsole suspension package and the awesome traction of the Vibram outsole. Top this all off with a waterproof Gore-Tex lining and the La Sportiva Thunder GTX Womens is a real winner.