jetgraphics wrote;

Got them at Wal-Mart last summer.   Try them that way
and you can return them if you don't like them.  I tried
three masks/goggles from Wal-Mart and eventually
had to get one from a dive shop.  The fins are durable
and comfortable. The open heel straps work well.  
A small-stroke push/flutter kick similar to stair climbing
motion works well for a top speed of 3 feet per second.
But that was for casual snorkeling and freediving to
fifty feet with no current.   They might not be safe to use
for anything else.   But I enjoyed them all summer.  :)

Tom

You might want to try a set before buying. They don't have the thrust of the
conventional style fin. Female divers love them but i don't recommend them
for spearfishing or ocean coastal diving. P.