Sandals by Head Over Heels by Dune, Faux-leather upper, Metallic finish, Ankle-strap fastening, Double front strap, Mid heel, Wipe with a damp sponge, Heel height: 8cm/3. Defining their customer through attitude rather than age, Dune's in-house design team put their own stamp on trends with sculptural shapes and embellished finishes. Diffusion line Head Over Heels introduces hot off-the-runway styles - think sandals, pumps and ballet flats - straight to your wardrobe, too.