I don't have a direct comparison, I have women's Superstars in size 41 and I ordered men's Slides in size 41, when they arrived they felt really roomy in the toe area. But when i held up the soles the black part measured exactly alike. The insoles when removed were exactly the same size too. I think I need Slides in size 40 but I'm hesitant to order them again and deal with returns. Eventually I'll make it to the GG store near me.Have you tried on the men's to compare? I may need to do this.