The shoe you are showing is an old classic called a fisherman's sandal. Along with penny loafers, espadrilles, and huaraches, they are timeless, unisex, and versatile as summer footwear options. They aren't bare and overly casual like thong or strap sandals, if you are going places where there are rocks, stones, gravel, grass or sand, they offer the toes some protection, give the foot air, and yet look enough like a shoe to give some dignity to an off-beach summer ensemble due to more leather in the toe area. They are a good wardrobe staple to have, regardless of what others think.