You have a Magictail monofin but you  mayby just like to change your tailskin? No problem :-).. here you can buy just the tailskin (without bikini) . The colour is selectable in the white field below. The tailskin size S fit for children between 8 and 10 years. European size: 128-142, US size 7-11, Austalian size 24-32.