Quick answer: The Sherwood Elite is an adjustable-strap, open-heel fin worn with dive boots. It comes in sizes from X-Small through X-Large and several colors, including black, lemon, magenta, steel blue and tiffany.
Open-heel fins with boots are the practical choice for shore entries, rocky exits and anything but warm-water boat dives. For bigger feet, size to the boot you'll actually wear, not your shoe size.
Check Sherwood's boot-size chart. If you wear a thick boot or have a wide foot, lean toward the larger size.