Monofin 'Dolphin' FRD ' with closed heel footpockets . Hand tapered blade from fiberglass makes blade very flexible. It is mostly used for finswimming, underwater orientation, freediving (especially for dynamic events) and long distance swimming. Standard measures are 72 cm x 66 cm (width x length). Monofin 'Dolphin' FRD has rubber ribs. We recommend a 'Dolphin' FRD because of the comfortable footpockets.OMER Millennium or Picasso SPEED footpockets will allow you to practice a long,long hours.
The fin has been tested by Lauri Lilja from Finland. :-)