I have a question regarding some of the markings on several pairs of fins I own. Hopefully someone can help me out. I currently own two pairs of Jet Fins and a pair of Apollo Bio Fin Pros. The other day when putting on my Jet Fins I noticed on the inside of the fin where you put the sole of your boot the size is listed there "X-Large" in my case. Above the size there is a weird symbol like a circle with a bunch of dots in it, and below the size the number "1" is there. When I look on my other Jet Fin I see a number "2" in the same place as the "1" on the other fin. Just for the heck I looked at my other pair of Jet Fins and both of them have a number "1" in this location. I also looked at my pair of Apollo Bio Fin Pros and both of them have a number "1" in this location. Does anyone know what that number printed below the size means? Obviously it must signify some sort of difference. I'm just curious...
Jet Fins - What do the numbers mean printed on them???
- Thread starter jkc_11_20
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PerroneFord
Contributor
I always used mine to determine left and right.. they are marked 1 and 2.
SparticleBrane
Contributor
They're just trying to confuse you. 
DennisW
Contributor
The marking is the date code for when the fin was manufactured. It's a common practice for manufacturers. I am not looking at mine, but it may be fairly easy to decode. Some manufacturers only id the year, some the month and year, and some the day, month and year.
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