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Choosing the right Jet/Turtle fin for you
 

 

Foot Pocket Depth
inside at sole

Foot Pocket Width
inside at sole

Foot Pocket Height
inside

Blade Length tip to edge of foot pocket

Overall Width at widest point

Overall Length at longest point
Common Spring Strap Size in inches.

Fits this shoe size often. Mens US sizes

Jet M

***

6½”*

7½”

31/4"

3½”

2 3/4"

2 3/4" - 3"

10" **

9"

17½”  

4-6

Jet L

***

7½”*

81/4"

3½”

3½” - 4"

2 3/4"

2.85" - 3"

10" **

9 1/4"

18½”  

6-8

Jet XL

***

8½”*

8.6"

3 3/4"

4" - 4½"

2 3/4"

3" - 3 1/4"

13 3/8" **

 

95/8"

22"   9-11

Turtle

***

8 5/8"

83/4"

4 3/8"

4.375"

3 ½”

3 ½”

11 ½” 10" 20 1/4"   10-15

Jet XXL

9"

4 1/4"

4 1/4"

13 3/8"

95/8"

22½"  

13-16

* usable foot pocket space is more likely 1" less due to the sharply angled toe area.

** Difficult to determine due to the way it is manufactured.

*** Measurements taken by *Floater* on Scubaboard as reported in this thread: Note the variation in dimensions.

I first got the idea to put this together because I had so much difficulty finding a pair of fins and boots that fit, then saw Boogie711's post on Scubaboard that got me thinking (post #29) - Thanks for the idea!

notes:  The Jets are much stiffer than the Turtles.

            The Turtle foot pocket is much softer and conforms to the foot better.

            The XXL Jets foot pocket is much thicker rubber than the Turtle.

The XXL Jets and Turtles weigh approximately the same, without an accurate scale I would guess that the Jets are an ounce or two heavier.

Fin dimensions may vary due to manufacturing differences in wall thicknesses and other variables. It is recommended that you try several of the same size to determine which is most aptly suited for your foot and boot.

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Following are the corresponding Jet fin sizes (and turtles) with various boot brands and sizes people have found to work.

Click your Boot Brand to see chart

If you have tried one of the missing combinations, or one not listed please post it on the Scubaboard or Contact me via email.

Thanks to Scubaroo and all the rest at the Scubaboard for collecting the drysuit boot information.