This image of the sole of a Marina Dolfino full-foot fin is designed to accompany a forthcoming article about a German standard focusing on the dimensioning of swimming fins. "DIN 7876-A" indicates the number of the German standard (DIN 7876), with particular reference to full-foot fins (DIN 7876-B would denote an open-heel fin). "FL 275" and "FB 105" identify this fin as having a foot length of 275 millimetres and a foot width of 105 millimetres.
<a href="//commons.wikimedia.org/wiki/User:Helmardine" title="User:Helmardine">Helmardine</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>