From LeisurePro:
A fin so revolutionary that the U.S. Navy cut their swim time by 1 minute on a 500 Meter Swim! This proven fin design is manufactured from a lightweight, neutrally buoyant Monoprene resin that results in better trim positioning with maximum thrust on the down kick and minimal resistance on the up kick.
Suggested Retail: $127.71
Our Regular Price: $74.95
Through 2/8/2012 Only $69.96