Take a look at this.
BUDDY BELT HARNESS- size 4 RED- NEW | eBay
Notice how the two arm holes connect. It's different than how they usually are. The seller says these are in fact BB and this is a size 4, yet in their other listings they have other size 4s with the correct shape. Does this strike anyone as odd? It'd be so easy to knock off the shape of a BB, what is up with this one?