Yes Heather

The Yes Golf Heather MOI is the version of the Heather built around a moment-of-inertia forward push, which is the detail forum.tourspecgolf.com has attached to it in discussion of the line. That's the extent of what's on record for this release, and it's editorial, not a maker's own claim or a verified spec, so it's worth reading as one outlet's characterization rather than an established figure.

Without a maker's page or a Putter Talk review in hand for this specific release, there isn't a spec table or a hands-on impression to set against that MOI label. Where the Heather line sits more broadly, and how this particular version compares to other Heather releases, isn't something the record in front of us settles. What we do hold points to a putter positioned on stability, and that's the frame a reader should bring to it until more turns up.