Open Heel/Adjustable Fins
Adjustable or open heel scuba diving fins require dive boots or socks. They fit a wider variety of feet than full foot fins. More suitable than full-foot fins for a variety of diving conditions because they're adjustable. Also, you can wear different thicknesses of dive boots or fin socks to keep your toes toasty. Some divers experience improvements in propulsion with adjustable fins - in our opinion, the jury's still out on that.