Kowa BD II 6.5x32 with Marsupial Harness – Small or Medium?

NormNorm

FNG
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Mar 1, 2026
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Looking for some feedback on bino harness sizing. Tried searching but came up empty handed.

I’m likely picking up a set of Kowa BD II XD 6.5x32s (unless some used Mavens become available) and I’m planning to run them in a Marsupial No-Mag bino harness. Marsupial’s site calls out the Maven B3 for a Small, but I haven’t seen any specific guidance for the Kowas. Just using the general measurements, it’s close between small and medium territory.

For anyone running the Kowa 6.5x32 in a Marsupial harness:

• Did you go Small or Medium?
• How tight is the fit?
• Any issues with lens caps or one-handed access?

These will mostly be used for hunting in the Southeast, so I don’t foresee running any accessories on the binos.

If anyone happens to have a photo of this setup in a Marsupial harness that would be super helpful too.


Appreciate any feedback in advance!
 
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