These are classic lace-up sneakers with reflective upper detailing and GEL™ technology for supportive all-day comfort. They’re crafted with a breathable mesh and synthetic leather upper, plus a carbon rubber outsole. They come in unisex sizing. ASICS size 4 = Women’s US size 5.5ASICS size 4.5 = Women’s US size 6ASICS size 5 = Women’s US size 6.5ASICS size 5.5 = Women’s US size 7ASICS size 6 = Women’s US size 7.5ASICS size 6.5 = Women’s US size 8ASICS size 7 = Women’s US size 8.5ASICS size 7.5 = Women’s US size 9ASICS size 8 = Women’s US size 9.5ASICS 8.5 = Women’s US size 10ASICS size 9 = Women’s US size 10.5ASICS 9.5 = Women’s US size 11