Our Monofin Todler is for small Mermaids (6 to 12) is the best on the market. Designed to fit your foot comfortably, it is unlike other brands that squeeze your feet into a tight compartment with a heel strap that can slip and come off. Although our monofins fit comfortably and securely, your feet can also come out easily with a light tug. The best part is it gives complete flexibility to all sizes of feet. It also provides a more realistic fin as it covers your feet so naturally, you can hardly tell there are feet inside.