Lightly worn Size 4 men=6 women (can likely fit 5.5 as well) I wear a size five and these are slightly big on me. I added a cutout from a foam shoe insert to the inside of the buckle to make it more comfortable. You can pull this off or keep it on. Description from website: Ringing in our fourth collaboration with Opening Ceremony, we’ve teamed up yet again to launch a limited-edition line inspired by urban explorers. Merging Teva heritage details with Opening Ceremony’s undeniable flair, the new Hurricane XLT2 Gladiator delivers an edgy, utilitarian vibe. Reimagining Teva’s Universal Strapping System in premium suede, this versatile, gladiator-style sandal is grounded in a Durabrasion Rubber™ outsole for ultimate traction. Premium suede upper straps Top ankle closer is removable via hook and loop attachment Easy hook-and-loop closure comes on and off quickly and gets the fit just right EVA-foam midsole for lightweight cushioning, Nylon shank stabilizes and supports your foot on uneven terrain Rugged Durabrasion Rubber™ outsole stands up to abuse and supplies great traction Half pair weight for size W7/M9: 10.25oz RN 88276