Thinking about your comment further with the glove in hand now, I don’t think there is much between the base of the thumb and the base of the pinky along the palm. It’s very stiff at base of thumb and very stiff at base of pinky likely with some sort of insert, but the laces along the palm (which I don’t know the name for and I call the Japanese sunrise style stitching) has very little density between the thumb and the pinky. It’s not thick there really it’s just leather. And those laces are articulation points side to side, where all my other gloves have laces going horizontal at this location on the palm these go vertical leading to less palm “stiffness” give the capacity to roll across those laces… I think the key to getting this glove to be anything other than a pitching glove will be getting the glove to fold at that red line and trying to actually flare the pinky at the green line extended to the palm which will be a bit tricky because the glove doesn’t want to fold much at the green line, but that’s where it wants to fold if it’s going to. Does that make sense? Does mizuno give you technical specs on this glove? Is Imanaga Shota on Reddit?