SBA3 Storage Plug Insert Container with Clip-On Lid and Optional Rubber Pad

So far so good. Fit is great, just need to put it to use.

Perfect fitment, not only does it give storage for batteries, but it also significantly improves the flop by adding that structure/compartment to the brace. I highly recommend for all brace users!!

Great clip-on Lid

The clip on lid offers very positive retention and appears very durable, I love the rubber material because it's soft and can protect my brace during storage.